mac80211: don't clear next_hop in path reclaim

Luis pointed out that this path is going to be freed right
away anyway so there's no point in assigning next_hop.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Luis Carlos Cobo <luisca@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/mesh_pathtbl.c

@@ -301,7 +301,6 @@ static void mesh_path_node_reclaim(struct rcu_head *rp)
 	struct ieee80211_sub_if_data *sdata =
 		IEEE80211_DEV_TO_SUB_IF(node->mpath->dev);
 
-	rcu_assign_pointer(node->mpath->next_hop, NULL);
 	atomic_dec(&sdata->u.sta.mpaths);
 	kfree(node->mpath);
 	kfree(node);