In commit 
1faf289454b9 ("ocfs2_dlm: disallow a domain join if node maps
mismatch") we introduced a new earlier NULL check so this one is not
needed.  Also static checkers complain because we dereference it first
and then check for NULL.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.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>
 
         * to be put in someone's domain map.
         * Also, explicitly disallow joining at certain troublesome
         * times (ie. during recovery). */
-       if (dlm && dlm->dlm_state != DLM_CTXT_LEAVING) {
+       if (dlm->dlm_state != DLM_CTXT_LEAVING) {
                int bit = query->node_idx;
                spin_lock(&dlm->spinlock);