batman-adv: Remove vis info element in free_info

The free_info function will be called when no reference to the info
object exists anymore. It must be ensured that the allocated memory
gets freed and not only the elements which are managed by the info
object.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index 0be55be..988296c 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -64,6 +64,7 @@
 
 	spin_unlock_bh(&bat_priv->vis_list_lock);
 	kfree_skb(info->skb_packet);
+	kfree(info);
 }
 
 /* Compare two vis packets, used by the hashing algorithm */