[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>
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index e63c1ff..8def7a5 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -1856,7 +1856,8 @@
 		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;
 	}