scsi: mpi3mr: Fix missing unlock on error

Goto unlock path before return from function in the error handling case.

Link: https://lore.kernel.org/r/20210603152803.717505-1-yangyingliang@huawei.com


Fixes: c9566231 ("scsi: mpi3mr: Create operational request and reply queue pair")
Reported-by: Hulk Robot <hulkci@huawei.com>
Acked-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>