scsi: qla2xxx: Cleaned up queue configuration code.

scsi: qla2xxx: Cleaned up queue configuration code.

Orabug: 26844197, 26923029

This patch cleaned up queue configuration code, such that once
initialized, we should not touch msix_count value.  This will prevent
incorrect numbers of MSI-X vectors requested while performing target
mode configuration.

[mkp: fixed Fixes: hash]

Cc: <stable@vger.kernel.org>
Fixes: d74595278f4a ("scsi: qla2xxx: Add multiple queue pair functionality.")
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>
Signed-off-by: Brian Maly <brian.maly@oracle.com>
Reviewed-by: Jack Vogel <jack.vogel@oracle.com>