nvme: remove unnecessary return values

Cleanup unnecessary ret values that are not checked or used in
nvme_alloc_ns().
Signed-off-by: Javier González <javier.gonz@samsung.com>
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/nvme/host/core.c

@@ -3872,7 +3872,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid,
 	struct gendisk *disk;
 	struct nvme_id_ns *id;
 	char disk_name[DISK_NAME_LEN];
-	int node = ctrl->numa_node, flags = GENHD_FL_EXT_DEVT, ret;
+	int node = ctrl->numa_node, flags = GENHD_FL_EXT_DEVT;
 
 	if (nvme_identify_ns(ctrl, nsid, ids, &id))
 		return;
@@ -3896,8 +3896,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid,
 	ns->ctrl = ctrl;
 	kref_init(&ns->kref);
 
-	ret = nvme_init_ns_head(ns, nsid, ids, id->nmic & NVME_NS_NMIC_SHARED);
-	if (ret)
+	if (nvme_init_ns_head(ns, nsid, ids, id->nmic & NVME_NS_NMIC_SHARED))
 		goto out_free_queue;
 	nvme_set_disk_name(disk_name, ns, ctrl, &flags);
 
@@ -3916,8 +3915,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid,
 		goto out_put_disk;
 
 	if ((ctrl->quirks & NVME_QUIRK_LIGHTNVM) && id->vs[0] == 0x1) {
-		ret = nvme_nvm_register(ns, disk_name, node);
-		if (ret) {
+		if (nvme_nvm_register(ns, disk_name, node)) {
 			dev_warn(ctrl->device, "LightNVM init failure\n");
 			goto out_put_disk;
 		}