[PATCH] UBIFS: fix error return code in ubifs_remount_rw() and ubifs_fill_super()

[Wei Yongjun]

From: Wei Yongjun <yongjun_wei at trendmicro.com.cn>

Fix to return -ENOMEM in the kmalloc() and d_make_root() error handling
case instead of 0, as done elsewhere in those functions.

Signed-off-by: Wei Yongjun <yongjun_wei at trendmicro.com.cn>
---
 fs/ubifs/super.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index f21acf0..673b4bc 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1629,8 +1629,10 @@ static int ubifs_remount_rw(struct ubifs_info *c)
 	}
 
 	c->write_reserve_buf = kmalloc(COMPRESSED_DATA_NODE_BUF_SZ, GFP_KERNEL);
-	if (!c->write_reserve_buf)
+	if (!c->write_reserve_buf) {
+		err = -ENOMEM;
 		goto out;
+	}
 
 	err = ubifs_lpt_init(c, 0, 1);
 	if (err)
@@ -2063,8 +2065,10 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
 	}
 
 	sb->s_root = d_make_root(root);
-	if (!sb->s_root)
+	if (!sb->s_root) {
+		err = -ENOMEM;
 		goto out_umount;
+	}
 
 	mutex_unlock(&c->umount_mutex);
 	return 0;