net/hinic: Fix null pointer dereference in hinic_physical_port_id

driver inclusion
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I4XF98


CVE: NA

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The hinic driver currently generates a NULL pointer dereference
when performing the hinicadm tool command during device probe.
This is because the hinicadm process accesses the NULL hwif
pointer in the hwdev which have not been allocated in probe.

Fix this by checking the initialization state of device before
accessing it.

Signed-off-by: Chiqijun <chiqijun@huawei.com>
Reviewed-by: Wangxiaoyun <cloud.wangxiaoyun@huawei.com>
Acked-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>