nvme-fabrics: remove unused argument

The variable 'count' is not currently used by nvmf_create_ctrl(), so
remove it.

Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/nvme/host/fabrics.c

@@ -978,7 +978,7 @@ EXPORT_SYMBOL_GPL(nvmf_free_options);
 				 NVMF_OPT_DISABLE_SQFLOW)
 
 static struct nvme_ctrl *
-nvmf_create_ctrl(struct device *dev, const char *buf, size_t count)
+nvmf_create_ctrl(struct device *dev, const char *buf)
 {
 	struct nvmf_ctrl_options *opts;
 	struct nvmf_transport_ops *ops;
@@ -1073,7 +1073,7 @@ static ssize_t nvmf_dev_write(struct file *file, const char __user *ubuf,
 		goto out_unlock;
 	}
 
-	ctrl = nvmf_create_ctrl(nvmf_device, buf, count);
+	ctrl = nvmf_create_ctrl(nvmf_device, buf);
 	if (IS_ERR(ctrl)) {
 		ret = PTR_ERR(ctrl);
 		goto out_unlock;