Mailbox: flush pending deferred works before freeing blk queue
Mailbox: flush pending deferred works before freeing blk queue

flush pending deferred works before freeing blk_queue to prevent
any attempt of access to blk_queue after it was freed

Signed-off-by: Fernando Guzman Lugo <1178e44bd45ef61ad7fa77e8fe1a3090154be79b@ti.com>
Signed-off-by: Hiroshi DOYU <e891c4ae8deef7e6c0a3fb82004ec71ca9fb7e00@nokia.com>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs