UBIFS: fix error path in create_default_filesystem()

In the end of 'create_default_filesystem()' we need to check
the return value of 'ubifs_write_node()' to ensure that we have
successfully written the 'cs_node'.

Signed-off-by: hujianyang <hujianyang@huawei.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c
index c2c3d13efa1c..79c6dbbc0e04 100644
--- a/fs/ubifs/sb.c
+++ b/fs/ubifs/sb.c
@@ -332,6 +332,8 @@ static int create_default_filesystem(struct ubifs_info *c)
         cs->ch.node_type = UBIFS_CS_NODE;
         err = ubifs_write_node(c, cs, UBIFS_CS_NODE_SZ, UBIFS_LOG_LNUM, 0);
         kfree(cs);
+        if (err)
+                return err;
 
         ubifs_msg("default file-system created");
         return 0;