soc: amlogic: canvas: add missing put_device() call in meson_canvas_get()

if of_find_device_by_node() succeed, meson_canvas_get() doesn't have
a corresponding put_device(). Thus add put_device() to fix the exception
handling for this function implementation.

Fixes: 382f8be04551 ("soc: amlogic: canvas: Fix meson_canvas_get when probe failed")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20201117011322.522477-1-yukuai3@huawei.com

diff --git a/drivers/soc/amlogic/meson-canvas.c b/drivers/soc/amlogic/meson-canvas.c
index c655f5f..d0329ad 100644 (file)
--- a/drivers/soc/amlogic/meson-canvas.c
+++ b/drivers/soc/amlogic/meson-canvas.c
@@ -72,8 +72,10 @@ struct meson_canvas *meson_canvas_get(struct device *dev)
         * current state, this driver probe cannot return -EPROBE_DEFER
         */
        canvas = dev_get_drvdata(&canvas_pdev->dev);
-       if (!canvas)
+       if (!canvas) {
+               put_device(&canvas_pdev->dev);
                return ERR_PTR(-EINVAL);
+       }
 
        return canvas;
 }