drm/bridge: tfp410: Make tfp410_fini() return void

tfp410_fini() always returns zero. Make it return no value which makes it
easier to see in the callers that there is no error to handle.

Also the return value of i2c and platform driver remove callbacks is
ignored anyway. This prepares making i2c and platform remove callbacks
return void, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220428162803.185275-1-u.kleine-koenig@pengutronix.de

drivers/gpu/drm/bridge/ti-tfp410.c

@@ -341,13 +341,11 @@ static int tfp410_init(struct device *dev, bool i2c)
 	return 0;
 }
 
-static int tfp410_fini(struct device *dev)
+static void tfp410_fini(struct device *dev)
 {
 	struct tfp410 *dvi = dev_get_drvdata(dev);
 
 	drm_bridge_remove(&dvi->bridge);
-
-	return 0;
 }
 
 static int tfp410_probe(struct platform_device *pdev)
@@ -357,7 +355,9 @@ static int tfp410_probe(struct platform_device *pdev)
 
 static int tfp410_remove(struct platform_device *pdev)
 {
-	return tfp410_fini(&pdev->dev);
+	tfp410_fini(&pdev->dev);
+
+	return 0;
 }
 
 static const struct of_device_id tfp410_match[] = {
@@ -394,7 +394,9 @@ static int tfp410_i2c_probe(struct i2c_client *client,
 
 static int tfp410_i2c_remove(struct i2c_client *client)
 {
-	return tfp410_fini(&client->dev);
+	tfp410_fini(&client->dev);
+
+	return 0;
 }
 
 static const struct i2c_device_id tfp410_i2c_ids[] = {