drm/bridge: lt8912b: return EPROBE_DEFER if bridge is not found

Returns EPROBE_DEFER when of_drm_find_bridge() fails, this is consistent
with what all the other DRM bridge drivers are doing and this is
required since the bridge might not be there when the driver is probed
and this should not be a fatal failure.

Cc: <[email protected]>
Fixes: 30e2ae9 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Signed-off-by: Matheus Castello <[email protected]>
Signed-off-by: Francesco Dolcini <[email protected]>
Reviewed-by: Laurent Pinchart <[email protected]>
Reviewed-by: Andrzej Hajda <[email protected]>
Signed-off-by: Neil Armstrong <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: microhobby

drivers/gpu/drm/bridge/lontium-lt8912b.c

@@ -676,8 +676,8 @@ static int lt8912_parse_dt(struct lt8912 *lt)
 
 	lt->hdmi_port = of_drm_find_bridge(port_node);
 	if (!lt->hdmi_port) {
-		dev_err(lt->dev, "%s: Failed to get hdmi port\n", __func__);
-		ret = -ENODEV;
+		ret = -EPROBE_DEFER;
+		dev_err_probe(lt->dev, ret, "%s: Failed to get hdmi port\n", __func__);
 		goto err_free_host_node;
 	}