net: hinic: simplify code logic

simplify code logic in hinic_ndo_set_vf_trust() and
hinic_ndo_set_vf_spoofchk().

Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>