netkit: Remove explicit active/peer ptr initialization

Remove the explicit NULLing of active/peer pointers and rely on the
implicit one done at net device allocation.

Suggested-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20231026094106.1505892-2-razor@blackwall.org

drivers/net/netkit.c

@@ -371,8 +371,6 @@ static int netkit_new_link(struct net *src_net, struct net_device *dev,
 	nk->policy = default_peer;
 	nk->mode = mode;
 	bpf_mprog_bundle_init(&nk->bundle);
-	RCU_INIT_POINTER(nk->active, NULL);
-	RCU_INIT_POINTER(nk->peer, NULL);
 
 	err = register_netdevice(peer);
 	put_net(net);
@@ -398,8 +396,6 @@ static int netkit_new_link(struct net *src_net, struct net_device *dev,
 	nk->policy = default_prim;
 	nk->mode = mode;
 	bpf_mprog_bundle_init(&nk->bundle);
-	RCU_INIT_POINTER(nk->active, NULL);
-	RCU_INIT_POINTER(nk->peer, NULL);
 
 	err = register_netdevice(dev);
 	if (err < 0)