net/sched: act_api: stop loop over ops array on NULL in tcf_action_init

The ops array is contiguous, so stop processing whenever a NULL is found
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

net/sched/act_api.c

@@ -1506,10 +1506,8 @@ int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla,
 err:
 	tcf_action_destroy(actions, flags & TCA_ACT_FLAGS_BIND);
 err_mod:
-	for (i = 0; i < TCA_ACT_MAX_PRIO; i++) {
-		if (ops[i])
-			module_put(ops[i]->owner);
-	}
+	for (i = 0; i < TCA_ACT_MAX_PRIO && ops[i]; i++)
+		module_put(ops[i]->owner);
 	return err;
 }