net-next/hinic: fix a problem in hinic_xmit_frame()

net-next/hinic: fix a problem in hinic_xmit_frame()

[ Upstream commit f7482683f1f4925c60941dbbd0813ceaa069d106 ]

The calculation of "wqe_size" is not correct when the tx queue is busy in
hinic_xmit_frame().

When there are no free WQEs, the tx flow will unmap the skb buffer, then
ring the doobell for the pending packets. But the "wqe_size" which used
to calculate the doorbell address is not correct. The wqe size should be
cleared to 0, otherwise, it will cause a doorbell error.

This patch fixes the problem.

Reported-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Zhao Chen <zhaochen6@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>