[PATCH v2] ubifs: Fix error return code in alloc_wbufs()

[Wang ShaoBo]

Fix to return PTR_ERR() error code from the error handling case instead
fo 0 in function alloc_wbufs(), as done elsewhere in this function.

Signed-off-by: Wang ShaoBo <bobo.shaobowang at huawei.com>
---
 fs/ubifs/super.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index cb3acfb7dd1f..dacbb999ae34 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -838,8 +838,10 @@ static int alloc_wbufs(struct ubifs_info *c)
 		c->jheads[i].wbuf.jhead = i;
 		c->jheads[i].grouped = 1;
 		c->jheads[i].log_hash = ubifs_hash_get_desc(c);
-		if (IS_ERR(c->jheads[i].log_hash))
+		if (IS_ERR(c->jheads[i].log_hash)) {
+			err = PTR_ERR(c->jheads[i].log_hash);
 			goto out;
+		}
 	}
 
 	/*
-- 
2.17.1