drm/bridge: vga-dac: Fix edid memory leak

edid should be freed once it's finished being used.

Fixes: 56fe8b6 ("drm/bridge: Add RGB to VGA bridge support")
Cc: Rob Herring <[email protected]>
Cc: Sean Paul <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: Archit Taneja <[email protected]>
Cc: Andrzej Hajda <[email protected]>
Cc: Laurent Pinchart <[email protected]>
Cc: <[email protected]> # v4.9+
Reviewed-by: Maxime Ripard <[email protected]>
Reviewed-by: Laurent Pinchart <[email protected]>
Signed-off-by: Sean Paul <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

drivers/gpu/drm/bridge/dumb-vga-dac.c

@@ -56,7 +56,9 @@ static int dumb_vga_get_modes(struct drm_connector *connector)
 	}
 
 	drm_mode_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:
 	/*