This reverts commit375d6d454awhich is commit07f12b26e2upstream. Unnecessarily calling free_netdev() from sit_init_net(). ipip6_dev_free() of 4.9.y called free_netdev(), so no need to call again after ipip6_dev_free(). Cc: Mao Wenan <maowenan@huawei.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Ajay Kaher <akaher@vmware.com> Reviewed-by: Mao Wenan <maowenan@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>