ovl: fix error for ovl_fill_super()

There are some places should return -EINVAL instead of -ENOMEM in
ovl_fill_super().

[Amir] Consistently set error before checking the error condition.

Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
1 file changed