scsi: libfc: Correct the condition check and invalid argument passed

Incorrect condition check was leading to data corruption.

Link: https://lore.kernel.org/r/20210603101404.7841-3-jhasan@marvell.com


Fixes: 8fd9efca ("scsi: libfc: Work around -Warray-bounds warning")
CC: stable@vger.kernel.org
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Javed Hasan <jhasan@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>