net: liquidio: Initialize netdev pointer before queue setup

In the Linux kernel, the following vulnerability has been resolved:

net: liquidio: Initialize netdev pointer before queue setup

In setup_nic_devices(), the netdev is allocated using alloc_etherdev_mq().

However, the pointer to this structure is stored in oct->props[i].netdev

only after the calls to netif_set_real_num_rx_queues() and

netif_set_real_num_tx_queues().

If either of these functions fails, setup_nic_devices() returns an error

without freeing the allocated netdev. Since oct->props[i].netdev is still

NULL at this point, the cleanup function liquidio_destroy_nic_device()

will fail to find and free the netdev, resulting in a memory leak.

Fix this by initializing oct->props[i].netdev before calling the queue

setup functions. This ensures that the netdev is properly accessible for

cleanup in case of errors.

Compile tested only. Issue found using a prototype static analysis tool

and code review.