RDMA/hns: Remove unuseful member

For struct hns_roce_cmdq, toggle is unused and
delete it.
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Link: https://lore.kernel.org/r/1565343666-73193-8-git-send-email-oulijun@huawei.comSigned-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/hns/hns_roce_cmd.c

@@ -211,7 +211,6 @@ int hns_roce_cmd_init(struct hns_roce_dev *hr_dev)
 	mutex_init(&hr_dev->cmd.hcr_mutex);
 	sema_init(&hr_dev->cmd.poll_sem, 1);
 	hr_dev->cmd.use_events = 0;
-	hr_dev->cmd.toggle = 1;
 	hr_dev->cmd.max_cmds = CMD_MAX_NUM;
 	hr_dev->cmd.pool = dma_pool_create("hns_roce_cmd", dev,
 					   HNS_ROCE_MAILBOX_SIZE,

drivers/infiniband/hw/hns/hns_roce_device.h

@@ -617,7 +617,6 @@ struct hns_roce_cmdq {
 	 * close device, switch into poll mode(non event mode)
 	 */
 	u8			use_events;
-	u8			toggle;
 };
 
 struct hns_roce_cmd_mailbox {