batman-adv: free neighbors when an interface is deactivated

hardif_disable_interface() calls purge_orig_ref() to immediately free
all neighbors associated with the interface that is going down.
purge_orig_neighbors() checked if the interface status is IF_INACTIVE
which is set to IF_NOT_IN_USE shortly before calling purge_orig_ref().

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

net/batman-adv/originator.c

@@ -224,10 +224,15 @@ static bool purge_orig_neighbors(struct bat_priv *bat_priv,
 		if ((time_after(jiffies,
 			neigh_node->last_valid + PURGE_TIMEOUT * HZ)) ||
 		    (neigh_node->if_incoming->if_status == IF_INACTIVE) ||
+		    (neigh_node->if_incoming->if_status == IF_NOT_IN_USE) ||
 		    (neigh_node->if_incoming->if_status == IF_TO_BE_REMOVED)) {
 
-			if (neigh_node->if_incoming->if_status ==
-							IF_TO_BE_REMOVED)
+			if ((neigh_node->if_incoming->if_status ==
+								IF_INACTIVE) ||
+			    (neigh_node->if_incoming->if_status ==
+							IF_NOT_IN_USE) ||
+			    (neigh_node->if_incoming->if_status ==
+							IF_TO_BE_REMOVED))
 				bat_dbg(DBG_BATMAN, bat_priv,
 					"neighbor purge: originator %pM, "
 					"neighbor: %pM, iface: %s\n",