[NET]: Remove bogus zero_it argument from sk_alloc

At this point nobody calls the sk_alloc(() with zero_it == 0,
so remove unneeded checks from it.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/core/sock.c

@@ -931,12 +931,8 @@ struct sock *sk_alloc(struct net *net, int family, gfp_t priority,
 {
 	struct sock *sk;
 
-	if (zero_it)
-		priority |= __GFP_ZERO;
-
-	sk = sk_prot_alloc(prot, priority, family);
+	sk = sk_prot_alloc(prot, priority | __GFP_ZERO, family);
 	if (sk) {
-		if (zero_it) {
 		sk->sk_family = family;
 		/*
 		 * See comment in struct sock definition to understand
@@ -946,7 +942,6 @@ struct sock *sk_alloc(struct net *net, int family, gfp_t priority,
 		sock_lock_init(sk);
 		sk->sk_net = get_net(net);
 	}
-	}
 
 	return sk;
 }