scsi: mpi3mr: Driver unload crashes host when enhanced logging is enabled

scsi: mpi3mr: Driver unload crashes host when enhanced logging is enabled

[ Upstream commit 5b06a7169c59ce0c77ef8b9c82aa07c478f82aac ]

Prevent driver from trying to dereference a NULL pointer in a debug print
while removing a device during driver unload.

Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Link: https://lore.kernel.org/r/20230228140835.4075-3-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>