Fix event_data->e_list management in tgt_event_add to prevent potenti…

…al memory leak

Signed-off-by: JK Chen <[email protected]>

usr/tgtd.c

@@ -217,12 +217,13 @@ int tgt_event_add(int fd, int events, event_handler_t handler, void *data)
 	memset(&ev, 0, sizeof(ev));
 	ev.events = events;
 	ev.data.ptr = tev;
+	list_add(&tev->e_list, &tgt_events_list);
 	err = epoll_ctl(ep_fd, EPOLL_CTL_ADD, fd, &ev);
 	if (err) {
 		eprintf("Cannot add fd, %m\n");
+		list_del(&tev->e_list);
 		free(tev);
-	} else
-		list_add(&tev->e_list, &tgt_events_list);
+	}
 
 	return err;
 }