cciss: Fix weird usage of ENXIO in cciss_scsi.c

cciss: Fix weird usage of ENXIO in cciss_scsi.c

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c
index 237d2b3..5d0e46d 100644
--- a/drivers/block/cciss_scsi.c
+++ b/drivers/block/cciss_scsi.c
@@ -1547,7 +1547,7 @@
 	if (sa->registered) {
 		printk("cciss%d: SCSI subsystem already engaged.\n", ctlr);
 		spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
-		return ENXIO;
+		return -ENXIO;
 	}
 	sa->registered = 1;
 	spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);