[NET]: Fix sock_init() return value.

It needs to return zero now that it is an initcall.

Also, net/nonet.c no longer needs a dummy sock_init().

Signed-off-by: David S. Miller <davem@davemloft.net>

net/socket.c

@@ -2063,6 +2063,8 @@ static int __init sock_init(void)
 #ifdef CONFIG_NETFILTER
 	netfilter_init();
 #endif
+
+	return 0;
 }
 
 core_initcall(sock_init);	/* early initcall */