Bluetooth: ATT: Fix not releasing buffer before calling the callback
Bluetooth: ATT: Fix not releasing buffer before calling the callback

The cloned buffer is used to retry in case a security error happen but
since the buffer pool is now limited the callback may actually block if
it creates a new request which would need 2 buffers (original + clone)
but only one is available since the previous request clone is not
released yet.

Change-Id: Ife508b09c4b326b8213fd0b130ebf3c2e7fe47c9
Signed-off-by: Luiz Augusto von Dentz <8530c5ea66a1bdbc08f98bfcf183c8be901b5990@intel.com>

aceofall/zephyr-iotos,Vudentz/zephyr,zephyrproject-rtos/zephyr,GiulianoFranchetto/zephyr,aceofall/zephyr-iotos,mirzak/zephyr-os,tidyjiang8/zephyr-doc,sharronliu/zephyr,punitvara/zephyr,tidyjiang8/zephyr-doc,Vudentz/zephyr,mirzak/zephyr-os,rsalveti/zephyr,ldts/zephyr,zephyriot/zephyr,fbsder/zephyr,jamesonwilliams/zephyr-kernel,sharronliu/zephyr,jamesonwilliams/zephyr-kernel,nashif/zephyr,aceofall/zephyr-iotos,punitvara/zephyr,rsalveti/zephyr,finikorg/zephyr,mbolivar/zephyr,tidyjiang8/zephyr-doc,pklazy/zephyr,runchip/zephyr-cc3220,kraj/zephyr,Vudentz/zephyr,erwango/zephyr,runchip/zephyr-cc3200,fractalclone/zephyr-riscv,32bitmicro/zephyr,bigdinotech/zephyr,explora26/zephyr,zephyriot/zephyr,bigdinotech/zephyr,jamesonwilliams/zephyr-kernel,runchip/zephyr-cc3200,erwango/zephyr,GiulianoFranchetto/zephyr,holtmann/zephyr,pklazy/zephyr,mbolivar/zephyr,holtmann/zephyr,zephyrproject-rtos/zephyr,zephyriot/zephyr,runchip/zephyr-cc3220,kraj/zephyr,kraj/zephyr,galak/zephyr,coldnew/zephyr-project-fork,holtmann/zephyr,sharronliu/zephyr,ldts/zephyr,pklazy/zephyr,explora26/zephyr,sharronliu/zephyr,finikorg/zephyr,punitvara/zephyr,ldts/zephyr,bboozzoo/zephyr,explora26/zephyr,nashif/zephyr,fractalclone/zephyr-riscv,zephyriot/zephyr,aceofall/zephyr-iotos,bigdinotech/zephyr,fbsder/zephyr,punitvara/zephyr,nashif/zephyr,galak/zephyr,32bitmicro/zephyr,runchip/zephyr-cc3200,zephyriot/zephyr,coldnew/zephyr-project-fork,finikorg/zephyr,runchip/zephyr-cc3220,galak/zephyr,runchip/zephyr-cc3220,finikorg/zephyr,coldnew/zephyr-project-fork,erwango/zephyr,bboozzoo/zephyr,mbolivar/zephyr,mirzak/zephyr-os,32bitmicro/zephyr,nashif/zephyr,galak/zephyr,bboozzoo/zephyr,GiulianoFranchetto/zephyr,kraj/zephyr,runchip/zephyr-cc3200,fbsder/zephyr,coldnew/zephyr-project-fork,zephyrproject-rtos/zephyr,runchip/zephyr-cc3220,pklazy/zephyr,galak/zephyr,sharronliu/zephyr,zephyrproject-rtos/zephyr,bboozzoo/zephyr,runchip/zephyr-cc3200,aceofall/zephyr-iotos,holtmann/zephyr,fractalclone/zephyr-riscv,zephyrproject-rtos/zephyr,tidyjiang8/zephyr-doc,GiulianoFranchetto/zephyr,mirzak/zephyr-os,nashif/zephyr,mbolivar/zephyr,Vudentz/zephyr,holtmann/zephyr,fractalclone/zephyr-riscv,bigdinotech/zephyr,32bitmicro/zephyr,GiulianoFranchetto/zephyr,erwango/zephyr,bboozzoo/zephyr,bigdinotech/zephyr,32bitmicro/zephyr,tidyjiang8/zephyr-doc,Vudentz/zephyr,ldts/zephyr,mbolivar/zephyr,fractalclone/zephyr-riscv,rsalveti/zephyr,jamesonwilliams/zephyr-kernel,pklazy/zephyr,rsalveti/zephyr,erwango/zephyr,finikorg/zephyr,explora26/zephyr,fbsder/zephyr,kraj/zephyr,Vudentz/zephyr,jamesonwilliams/zephyr-kernel,coldnew/zephyr-project-fork,ldts/zephyr,explora26/zephyr,fbsder/zephyr,mirzak/zephyr-os,punitvara/zephyr,rsalveti/zephyr