[AF_NETLINK]: module_put cleanup

This patch removes redundant argument check for module_put().
Signed-off-by: NMariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/netlink/af_netlink.c

@@ -472,8 +472,7 @@ static int netlink_release(struct socket *sock)
 				NETLINK_URELEASE, &n);
 	}	
 
-	if (nlk->module)
-		module_put(nlk->module);
+	module_put(nlk->module);
 
 	netlink_table_grab();
 	if (nlk->flags & NETLINK_KERNEL_SOCKET) {