nvme-rdma: avoid repeated request completion

The request may be executed asynchronously, and rq->state may be
changed to IDLE. To avoid repeated request completion, only
MQ_RQ_COMPLETE of rq->state is checked in nvme_rdma_complete_timed_out.
It is not safe, so need adding check IDLE for rq->state.
Signed-off-by: NSagi Grimberg <sagi@grimberg.me>
Signed-off-by: NChao Leng <lengchao@huawei.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>

drivers/nvme/host/rdma.c

@@ -1975,7 +1975,7 @@ static void nvme_rdma_complete_timed_out(struct request *rq)
 	struct nvme_rdma_queue *queue = req->queue;
 
 	nvme_rdma_stop_queue(queue);
-	if (!blk_mq_request_completed(rq)) {
+	if (blk_mq_request_started(rq) && !blk_mq_request_completed(rq)) {
 		nvme_req(rq)->status = NVME_SC_HOST_ABORTED_CMD;
 		blk_mq_complete_request(rq);
 	}