When modify port base vlan, the port base vlan tbl_sta needs to set to
false before removing old vlan, to indicate this operation is not finish.

Fixes: c0f46de3 ("net: hns3: fix port base vlan add fail when concurrent with reset")
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>