net: sched: cls_api: fix dead code in switch

Code at line 1850 is unreachable. Fix this by removing the break
statement above it, so the code for case RTM_GETCHAIN can be
properly executed.

Addresses-Coverity-ID: 1472050 ("Structurally dead code")
Fixes: 32a4f5ec ("net: sched: introduce chain object to uapi")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sched/cls_api.c

@@ -1846,7 +1846,6 @@ static int tc_ctl_chain(struct sk_buff *skb, struct nlmsghdr *n,
 		tcf_chain_put_explicitly_created(chain);
 		break;
 	case RTM_GETCHAIN:
-		break;
 		err = tc_chain_notify(chain, skb, n->nlmsg_seq,
 				      n->nlmsg_seq, n->nlmsg_type, true);
 		if (err < 0)