d_path() returns an ERR_PTR and it doesn't return NULL.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Cc: stable <stable@kernel.org>
Reviewed-by: N"Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>