[PKT_SCHED]: tc actions: remove unnecessary locking for refcnt changes

refcnt/bindcnt are only used in user context under the rtnl, no additional
locking is necessary. Besides it was only done in some places, so kill it.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/pkt_act.h

@@ -222,13 +222,11 @@ tcf_hash_check(u32 index, struct tc_action *a, int ovr, int bind)
 {
 	struct tcf_st *p = NULL;
 	if (index && (p = tcf_hash_lookup(index)) != NULL) {
-		spin_lock(&p->lock);
 		if (bind) {
 			p->bindcnt++;
 			p->refcnt++;
 		}
-		spin_unlock(&p->lock);
-		a->priv = (void *) p;
+		a->priv = p;
 	}
 	return p;
 }

net/sched/police.c

@@ -189,12 +189,10 @@ static int tcf_act_police_locate(struct rtattr *rta, struct rtattr *est,
 
 	if (parm->index && (p = tcf_police_lookup(parm->index)) != NULL) {
 		a->priv = p;
-		spin_lock(&p->lock);
 		if (bind) {
 			p->bindcnt += 1;
 			p->refcnt += 1;
 		}
-		spin_unlock(&p->lock);
 		if (ovr)
 			goto override;
 		return ret;