[SCSI] qla2xxx: negative error return in qla2x00_change_queue_depth()

The *change_queue_depth functions usually return a negative error return.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index ddc1d3d..82e57d7 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1258,7 +1258,7 @@
 		qla2x00_adjust_sdev_qdepth_up(sdev, qdepth);
 		break;
 	default:
-		return EOPNOTSUPP;
+		return -EOPNOTSUPP;
 	}
 
 	return sdev->queue_depth;