batman-adv: refactor tt_global_del() to avoid misalignment

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

net/batman-adv/translation-table.c

@@ -657,11 +657,12 @@ void tt_global_del(struct bat_priv *bat_priv,
 	struct tt_local_entry *tt_local_entry = NULL;
 
 	tt_global_entry = tt_global_hash_find(bat_priv, addr);
-	if (!tt_global_entry)
+	if (!tt_global_entry || tt_global_entry->orig_node != orig_node)
 		goto out;
 
-	if (tt_global_entry->orig_node == orig_node) {
-		if (roaming) {
+	if (!roaming)
+		goto out_del;
+
 	/* if we are deleting a global entry due to a roam
 	 * event, there are two possibilities:
 	 * 1) the client roamed from node A to node B => we mark
@@ -677,9 +678,10 @@ void tt_global_del(struct bat_priv *bat_priv,
 		tt_global_entry->roam_at = jiffies;
 		goto out;
 	}
-		}
+
+out_del:
 	_tt_global_del(bat_priv, tt_global_entry, message);
-	}
+
 out:
 	if (tt_global_entry)
 		tt_global_entry_free_ref(tt_global_entry);