net: vrf: Fix NAT within a VRF

Connection tracking with VRF is broken because the pass through the VRF
device drops the connection tracking info. Removing the call to nf_reset
allows DNAT and MASQUERADE to work across interfaces within a VRF.

Fixes: 73e20b76 ("net: vrf: Add support for PREROUTING rules on vrf device")
Signed-off-by: NDavid Ahern <dsa@cumulusnetworks.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/vrf.c

@@ -849,8 +849,6 @@ static struct sk_buff *vrf_rcv_nfhook(u8 pf, unsigned int hook,
 {
 	struct net *net = dev_net(dev);
 
-	nf_reset(skb);
-
 	if (NF_HOOK(pf, hook, net, NULL, skb, dev, NULL, vrf_rcv_finish) < 0)
 		skb = NULL;    /* kfree_skb(skb) handled by nf code */