drm/bridge: dw-hdmi: convert to of_drm_find_and_get_bridge()

of_drm_find_bridge() is deprecated. Move to its replacement
of_drm_find_and_get_bridge() which gets a bridge reference, and ensure it
is put when done by using the drm_bridge::next_bridge pointer.

Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-3-v2-1-8d7a3dbacdf4@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

Author: lucaceresoli

drivers/gpu/drm/bridge/synopsys/dw-hdmi.c

@@ -132,7 +132,6 @@ struct dw_hdmi_phy_data {
 struct dw_hdmi {
 	struct drm_connector connector;
 	struct drm_bridge bridge;
-	struct drm_bridge *next_bridge;
 
 	unsigned int version;
 
@@ -2912,7 +2911,7 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge,
 	struct dw_hdmi *hdmi = bridge->driver_private;
 
 	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
-		return drm_bridge_attach(encoder, hdmi->next_bridge,
+		return drm_bridge_attach(encoder, hdmi->bridge.next_bridge,
 					 bridge, flags);
 
 	return dw_hdmi_connector_create(hdmi);
@@ -3318,9 +3317,9 @@ static int dw_hdmi_parse_dt(struct dw_hdmi *hdmi)
 	if (!remote)
 		return -ENODEV;
 
-	hdmi->next_bridge = of_drm_find_bridge(remote);
+	hdmi->bridge.next_bridge = of_drm_find_and_get_bridge(remote);
 	of_node_put(remote);
-	if (!hdmi->next_bridge)
+	if (!hdmi->bridge.next_bridge)
 		return -EPROBE_DEFER;
 
 	return 0;