iwlwifi: turn on a lockdep assertion

CMD_SYNC is zero so the if (cmd->flags & CMD_SYNC) is never true and we
never check the assertion.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

drivers/net/wireless/iwlwifi/dvm/lib.c

@@ -1265,7 +1265,7 @@ int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 	 * the mutex, this ensures we don't try to send two
 	 * (or more) synchronous commands at a time.
 	 */
-	if (cmd->flags & CMD_SYNC)
+	if (!(cmd->flags & CMD_ASYNC))
 		lockdep_assert_held(&priv->mutex);
 
 	if (priv->ucode_owner == IWL_OWNERSHIP_TM &&