uio: fix potential memory leak in error case

Should jump to lable err_infoopen when idev->info is NULL
in uio_open().

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/uio/uio.c

@@ -491,7 +491,7 @@ static int uio_open(struct inode *inode, struct file *filep)
 	if (!idev->info) {
 		mutex_unlock(&idev->info_lock);
 		ret = -EINVAL;
-		goto err_alloc_listener;
+		goto err_infoopen;
 	}
 
 	if (idev->info && idev->info->open)