[PATCH] libata: fix ata_set_mode() return value

Make ata_set_mode() return correct error value when ata_dev_set_mode()
fails.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/scsi/libata-core.c

@@ -1856,7 +1856,8 @@ static void ata_set_mode(struct ata_port *ap)
 		if (!ata_dev_present(dev))
 			continue;
 
-		if (ata_dev_set_mode(ap, dev))
+		rc = ata_dev_set_mode(ap, dev);
+		if (rc)
 			goto err_out;
 	}