[PATCH v3] nvme-tcp: fix a possible UAF when failing to allocate an io queue

[Sagi Grimberg]

>>> Thanks,
>>>
>>> applied to nvme-6.3.
>>
>> Actually, I would like to waut for Yanjun to explicitly
>> give out his Tested-by.
> 
> I can drop it for now, but that basically guarantees that we're going
> to miss -rc4.

This has been buggy for a while now, we can wait and then have stable
pick it up.

Thanks