[CONNECTOR]: Don't touch queue dev after decrement of ref count.
cn_queue_free_callback() will touch 'dev'(i.e. cbq->pdev), so it should be called before atomic_dec(&dev->refcnt). Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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