drm/mediatek/dp: fix memory leak on ->get_edid callback error path

Setting new_edid to NULL leaks the buffer.

Fixes: f70ac097a2cf ("drm/mediatek: Add MT8195 Embedded DisplayPort driver")
Cc: Markus Schneider-Pargmann <[email protected]>
Cc: Guillaume Ranquet <[email protected]>
Cc: Bo-Chen Chen <[email protected]>
Cc: CK Hu <[email protected]>
Cc: AngeloGioacchino Del Regno <[email protected]>
Cc: Dmitry Osipenko <[email protected]>
Cc: Chun-Kuang Hu <[email protected]>
Cc: Philipp Zabel <[email protected]>
Cc: Matthias Brugger <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: <[email protected]> # v6.1+
Signed-off-by: Jani Nikula <[email protected]>
Reviewed-by: Guillaume Ranquet <[email protected]>
Link: https://patchwork.kernel.org/project/dri-devel/patch/[email protected]/
Signed-off-by: Chun-Kuang Hu <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c
index da023de5317a..e4c16ba9902d 100644
--- a/drivers/gpu/drm/mediatek/mtk_dp.c
+++ b/drivers/gpu/drm/mediatek/mtk_dp.c
@@ -2063,6 +2063,7 @@ static struct edid *mtk_dp_get_edid(struct drm_bridge *bridge,
 	 */
 	if (mtk_dp_parse_capabilities(mtk_dp)) {
 		drm_err(mtk_dp->drm_dev, "Can't parse capabilities\n");
+		kfree(new_edid);
 		new_edid = NULL;
 	}