ocfs2: fix error handling when creating debugfs root in ocfs2_init()

Error handling if creation of root of debugfs in ocfs2_init() fails is
broken.  Although error code is set we fail to exit ocfs2_init() with
error and thus initialization ends with success.  Later when mounting a
filesystem, ocfs2 debugfs entries end up being created in the root of
debugfs filesystem which is confusing.

Fix the error handling to bail out.

Coverity id: 1227009.

Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 93c85bc745e1..8e3ac25efb9f 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1622,8 +1622,9 @@ static int __init ocfs2_init(void)
 
         ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
         if (!ocfs2_debugfs_root) {
-                status = -EFAULT;
+                status = -ENOMEM;
                 mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
+                goto out4;
         }
 
         ocfs2_set_locking_protocol();