[BACKPORT 4.19.y 1/3] drm/bridge: tfp410: fix memleak in get_modes()

[Mathieu Poirier]

From: Tomi Valkeinen <tomi.valkeinen@xxxxxx>

commit c08f99c39083ab55a9c93b3e93cef48711294dad upstream

We don't free the edid blob allocated by the call to drm_get_edid(),
causing a memleak. Fix this by calling kfree(edid) at the end of the
get_modes().

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20190610135739.6077-1-tomi.valkeinen@xxxxxx
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
---
 drivers/gpu/drm/bridge/ti-tfp410.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
index c3e32138c6bb..9dc109df0808 100644
--- a/drivers/gpu/drm/bridge/ti-tfp410.c
+++ b/drivers/gpu/drm/bridge/ti-tfp410.c
@@ -64,7 +64,12 @@ static int tfp410_get_modes(struct drm_connector *connector)
 
 	drm_connector_update_edid_property(connector, edid);
 
-	return drm_add_edid_modes(connector, edid);
+	ret = drm_add_edid_modes(connector, edid);
+
+	kfree(edid);
+
+	return ret;
+
 fallback:
 	/* No EDID, fallback on the XGA standard modes */
 	ret = drm_add_modes_noedid(connector, 1920, 1200);
-- 
2.17.1