net: hns3: refix kernel crash when unload VF while it is being reset

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

----------------------------

The previous commit 7051ad8d91c9 ("net: hns3: fix kernel crash when unload VF while it is being reset")
did not full solve the problem, we should clear the state
HCLGEVF_STATE_NIC_REGISTERED after reset handling done.

Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Reviewed-by: li yongxin <liyongxin1@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>