drm/sun4i: add missing put_device() call in sun8i_r40_tcon_tv_set_mux()

[ Upstream commit 07b5b12d97dc9f47ff3dff46c4f944a15bd762e5 ]

If sun8i_r40_tcon_tv_set_mux() succeed, sun8i_r40_tcon_tv_set_mux()
doesn't have a corresponding put_device(). Thus add put_device()
to fix the exception handling for this function implementation.

Fixes: 0305189afb32 ("drm/sun4i: tcon: Add support for R40 TCON")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826010826.1785487-1-yukuai3@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index 359b56e43b83c564e48e062c2f12a1524f20485f..24d95f058918c53384e0a6c75c035b0627ad70c9 100644 (file)
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -1433,14 +1433,18 @@ static int sun8i_r40_tcon_tv_set_mux(struct sun4i_tcon *tcon,
        if (IS_ENABLED(CONFIG_DRM_SUN8I_TCON_TOP) &&
            encoder->encoder_type == DRM_MODE_ENCODER_TMDS) {
                ret = sun8i_tcon_top_set_hdmi_src(&pdev->dev, id);
-               if (ret)
+               if (ret) {
+                       put_device(&pdev->dev);
                        return ret;
+               }
        }
 
        if (IS_ENABLED(CONFIG_DRM_SUN8I_TCON_TOP)) {
                ret = sun8i_tcon_top_de_config(&pdev->dev, tcon->id, id);
-               if (ret)
+               if (ret) {
+                       put_device(&pdev->dev);
                        return ret;
+               }
        }
 
        return 0;