nvme-rdma: minor cleanup in nvme_rdma_create_cq()

Before cleanup:
enum ib_poll_context poll_ctx;

if (nvme_rdma_poll_queue(queue)) {
        poll_ctx = IB_POLL_DIRECT;
        queue->ib_cq = ib_alloc_cq(ibdev, queue, queue->cq_size,
                                   comp_vector, poll_ctx);
} else {
        poll_ctx = IB_POLL_SOFTIRQ;
        queue->ib_cq = ib_cq_pool_get(ibdev, queue->cq_size,
                                      comp_vector, poll_ctx);
}

After cleanup:
if (nvme_rdma_poll_queue(queue))
        queue->ib_cq = ib_alloc_cq(ibdev, queue, queue->cq_size,
                                   comp_vector, IB_POLL_DIRECT);
else
        queue->ib_cq = ib_cq_pool_get(ibdev, queue->cq_size,
                                      comp_vector, IB_POLL_SOFTIRQ);

IB_POLL_SOFTIRQ/IB_POLL_SOFTIRQ gets used directly in function, this
seems more accessible.
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/nvme/host/rdma.c

@@ -464,7 +464,6 @@ static int nvme_rdma_create_cq(struct ib_device *ibdev,
 		struct nvme_rdma_queue *queue)
 {
 	int ret, comp_vector, idx = nvme_rdma_queue_idx(queue);
-	enum ib_poll_context poll_ctx;
 
 	/*
 	 * Spread I/O queues completion vectors according their queue index.
@@ -473,15 +472,12 @@ static int nvme_rdma_create_cq(struct ib_device *ibdev,
 	comp_vector = (idx == 0 ? idx : idx - 1) % ibdev->num_comp_vectors;
 
 	/* Polling queues need direct cq polling context */
-	if (nvme_rdma_poll_queue(queue)) {
-		poll_ctx = IB_POLL_DIRECT;
+	if (nvme_rdma_poll_queue(queue))
 		queue->ib_cq = ib_alloc_cq(ibdev, queue, queue->cq_size,
-					   comp_vector, poll_ctx);
-	} else {
-		poll_ctx = IB_POLL_SOFTIRQ;
+					   comp_vector, IB_POLL_DIRECT);
+	else
 		queue->ib_cq = ib_cq_pool_get(ibdev, queue->cq_size,
-					      comp_vector, poll_ctx);
-	}
+					      comp_vector, IB_POLL_SOFTIRQ);
 
 	if (IS_ERR(queue->ib_cq)) {
 		ret = PTR_ERR(queue->ib_cq);