nfp: flower: free dst_entry in route table

We need to release the refcnt on dst_entry in the route table, otherwise
we will leak the route.

Fixes: 8e6a904 ("nfp: flower vxlan neighbour offload")
Signed-off-by: Pieter Jansen van Vuuren <[email protected]>
Signed-off-by: Louis Peens <[email protected]>
Reviewed-by: Jakub Kicinski <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: pjvuuren

drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c

@@ -381,6 +381,8 @@ nfp_tun_neigh_event_handler(struct notifier_block *nb, unsigned long event,
 	err = PTR_ERR_OR_ZERO(rt);
 	if (err)
 		return NOTIFY_DONE;
+
+	ip_rt_put(rt);
 #else
 	return NOTIFY_DONE;
 #endif