uacce: delete unneeded variable initialization

delete unneeded variable initialization.
Signed-off-by: Kai Ye <yekai13@huawei.com>
Link: https://lore.kernel.org/r/1616749747-3882-1-git-send-email-yekai13@huawei.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/uacce/uacce.c

@@ -126,7 +126,7 @@ static int uacce_fops_open(struct inode *inode, struct file *filep)
 {
 	struct uacce_device *uacce;
 	struct uacce_queue *q;
-	int ret = 0;
+	int ret;
 
 	uacce = xa_load(&uacce_xa, iminor(inode));
 	if (!uacce)