[PATCH] ubi: do not drop UBI device reference before using

[Pan Bian]

The UBI device reference is dropped but then the device is used as a
parameter of ubi_err. The bug is introduced in changing ubi_err's 
behavior. The old ubi_err does not require a UBI device as its first 
parameter, but the new one does.

Fixes: 32608703310 ("UBI: Extend UBI layer debug/messaging capabilities")

Signed-off-by: Pan Bian <bianpan2016@xxxxxxx>
---
 drivers/mtd/ubi/kapi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index e9e9ecb..0b8f0c4 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -227,9 +227,9 @@ struct ubi_volume_desc *ubi_open_volume(int ubi_num, int vol_id, int mode)
 out_free:
 	kfree(desc);
 out_put_ubi:
-	ubi_put_device(ubi);
 	ubi_err(ubi, "cannot open device %d, volume %d, error %d",
 		ubi_num, vol_id, err);
+	ubi_put_device(ubi);
 	return ERR_PTR(err);
 }
 EXPORT_SYMBOL_GPL(ubi_open_volume);
-- 
2.7.4