wifi: wilc1000: add missing unregister_netdev() in wilc_netdev_ifc_init()

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

wifi: wilc1000: add missing unregister_netdev() in wilc_netdev_ifc_init()

Fault injection test reports this issue:

kernel BUG at net/core/dev.c:10731!

invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI

Call Trace:

<TASK>

wilc_netdev_ifc_init+0x19f/0x220 [wilc1000 884bf126e9e98af6a708f266a8dffd53f99e4bf5]

wilc_cfg80211_init+0x30c/0x380 [wilc1000 884bf126e9e98af6a708f266a8dffd53f99e4bf5]

wilc_bus_probe+0xad/0x2b0 [wilc1000_spi 1520a7539b6589cc6cde2ae826a523a33f8bacff]

spi_probe+0xe4/0x140

really_probe+0x17e/0x3f0

__driver_probe_device+0xe3/0x170

driver_probe_device+0x49/0x120

The root case here is alloc_ordered_workqueue() fails, but

cfg80211_unregister_netdevice() or unregister_netdev() not be called in

error handling path. To fix add unregister_netdev goto lable to add the

unregister operation in error handling path.