netdev: skip associate event when not in OWE/FT

The associate event is only important for OWE and FT. If neither of
these conditions (or FT initial association) are happening we do
not need to continue further processing the associate event.

src/netdev.c

@@ -2389,6 +2389,9 @@ static void netdev_associate_event(struct l_genl_msg *msg,
 	if (netdev->aborting)
 		return;
 
+	if (!netdev->owe && !netdev->in_ft && !netdev->handshake->mde)
+		return;
+
 	if (!l_genl_attr_init(&attr, msg)) {
 		l_debug("attr init failed");
 		return;