[PATCH] drm/bridge: dw-hdmi: fix i2c adapter leak on probe failure

[Johan Hovold]

Make sure to drop the i2c adapter device and module references before
returning when detecting a malformed devicetree during probe.

Fixes: 80e2f97968b5 ("drm: bridge: dw-hdmi: Switch to regmap for register access")
Cc: stable@xxxxxxxxxxxxxxx	# 4.12
Cc: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 17d5caedb32e..9eb6cf8a321f 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -3389,7 +3389,8 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
 			break;
 		default:
 			dev_err(dev, "reg-io-width must be 1 or 4\n");
-			return ERR_PTR(-EINVAL);
+			ret = -EINVAL;
+			goto err_res;
 		}
 
 		iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-- 
2.54.0