scsi: qla2xxx: Fix response queue count for Target mode.

Target mode initialization was not calculating response queue values
correctly resulting into one less MSI-X vector.

[mkp: fixed Fixes: hash]

Cc: <stable@vger.kernel.org>
Fixes: 093df737 ("scsi: qla2xxx: Fix Target mode handling with Multiqueue changes.")
Signed-off-by: Michael Hernandez <michael.hernandez@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_os.c

@@ -1916,12 +1916,13 @@ qla83xx_iospace_config(struct qla_hw_data *ha)
 		if (ql2xmqsupport) {
 			/* MB interrupt uses 1 vector */
 			ha->max_req_queues = ha->msix_count - 1;
-			ha->max_rsp_queues = ha->max_req_queues;
 
 			/* ATIOQ needs 1 vector. That's 1 less QPair */
 			if (QLA_TGT_MODE_ENABLED())
 				ha->max_req_queues--;
 
+			ha->max_rsp_queues = ha->max_req_queues;
+
 			/* Queue pairs is the max value minus
 			 * the base queue pair */
 			ha->max_qpairs = ha->max_req_queues - 1;