mod_fifo: Fix memory leak of xml structure

If getting the DB handle failed during the load or reload of the
configuration, we would leak the XML structure we just allocated for
the configuration.

src/mod/applications/mod_fifo/mod_fifo.c

@@ -4628,10 +4628,10 @@ static switch_status_t load_config(int reload, int del_all)
 			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "%s configured\n", node->name);
 		}
 	}
-	switch_xml_free(xml);
 
   done:
 
+	switch_xml_free(xml);
 	if (reload) {
 		fifo_node_t *node;
 		switch_mutex_lock(globals.mutex);