net/sched: act_ct: Remove redundant ct get and check

The assignment is not being used and redundant.
The check for null is redundant as nf_conntrack_put() also
checks this.
Signed-off-by: NRoi Dayan <roid@nvidia.com>
Reviewed-by: NPaul Blakey <paulb@nvidia.com>
Link: https://lore.kernel.org/r/20210428060532.3330974-1-roid@nvidia.comSigned-off-by: NJakub Kicinski <kuba@kernel.org>

net/sched/act_ct.c

@@ -991,9 +991,7 @@ static int tcf_ct_act(struct sk_buff *skb, const struct tc_action *a,
 
 		/* Associate skb with specified zone. */
 		if (tmpl) {
-			ct = nf_ct_get(skb, &ctinfo);
-			if (skb_nfct(skb))
-				nf_conntrack_put(skb_nfct(skb));
+			nf_conntrack_put(skb_nfct(skb));
 			nf_conntrack_get(&tmpl->ct_general);
 			nf_ct_set(skb, tmpl, IP_CT_NEW);
 		}