platform: msm_shared: Fix memory leak
platform: msm_shared: Fix memory leak

Scatter gather list is allocated on heap, free the scatter gather list
before returning the command failure.

CRs-Fixed: 677061
Change-Id: Ic19fcffc25127d074716deb785bd98ef176e184a

Foxda-Tech/polaris-bootable-bootloader-lk,M1cha/lktris,efidroid/lk,efidroid/lk,Foxda-Tech/polaris-bootable-bootloader-lk,M1cha/lktris,CanarySolutions/little-kernel,CanarySolutions/little-kernel,M1cha/lktris,Foxda-Tech/polaris-bootable-bootloader-lk,CanarySolutions/little-kernel,M1cha/lktris,M1cha/lktris,efidroid/lk,efidroid/lk,Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,CanarySolutions/little-kernel,CanarySolutions/little-kernel,efidroid/lk