nfc: nci: add missed destroy_workqueue in nci_register_device

When nfc_register_device fails in nci_register_device,
destroy_workqueue() shouled be called to destroy ndev->tx_wq.

Fixes: 3c1c0f5d

 ("NFC: NCI: Fix nci_register_device init sequence")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>