nvme-pci: cleaning up nvme_pci_init_request

Erase the superfluous line that retrieves the nvme_dev.
Signed-off-by: Irvin Cote <irvincoteg@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>

drivers/nvme/host/pci.c

@@ -420,10 +420,9 @@ static int nvme_pci_init_request(struct blk_mq_tag_set *set,
 		struct request *req, unsigned int hctx_idx,
 		unsigned int numa_node)
 {
-	struct nvme_dev *dev = to_nvme_dev(set->driver_data);
 	struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
 
-	nvme_req(req)->ctrl = &dev->ctrl;
+	nvme_req(req)->ctrl = set->driver_data;
 	nvme_req(req)->cmd = &iod->cmd;
 	return 0;
 }