In some cases, the device is not initialized because reset failed.
If another task calls hns3_reset_notify_up_enet() before reset
retry, it will cause an error since uninitialized pointer access.
So add check for HNS3_NIC_STATE_INITED before calling
hns3_nic_net_open() in hns3_reset_notify_up_enet().

Fixes: bb6b94a8 ("net: hns3: Add reset interface implementation in client")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>