scsi: qla2xxx: Remove redundant initialization of pointer req

The pointer req is being initialized with a value that is never read, it is
being updated later on. The assignment is redundant and can be removed.

Link: https://lore.kernel.org/r/20210910114610.44752-1-colin.king@canonical.com


Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Addresses-Coverity: ("Unused value")