platform/x86/siemens: simatic-ipc-batt: Simplify simatic_ipc_batt_remove()

Instead of unconditionally returning zero, let simatic_ipc_batt_remove()
return no value. This is a preparation to convert the drivers using this
function to struct platform_driver::remove_new().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230927081040.2198742-24-u.kleine-koenig@pengutronix.deReviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

drivers/platform/x86/siemens/simatic-ipc-batt-apollolake.c

@@ -27,7 +27,9 @@ static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_127e = {
 
 static int simatic_ipc_batt_apollolake_remove(struct platform_device *pdev)
 {
-	return simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_127e);
+	simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_127e);
+
+	return 0;
 }
 
 static int simatic_ipc_batt_apollolake_probe(struct platform_device *pdev)

drivers/platform/x86/siemens/simatic-ipc-batt-elkhartlake.c

@@ -27,7 +27,9 @@ static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_bx_21a = {
 
 static int simatic_ipc_batt_elkhartlake_remove(struct platform_device *pdev)
 {
-	return simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_bx_21a);
+	simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_bx_21a);
+
+	return 0;
 }
 
 static int simatic_ipc_batt_elkhartlake_probe(struct platform_device *pdev)

drivers/platform/x86/siemens/simatic-ipc-batt-f7188x.c

@@ -47,7 +47,9 @@ static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_bx_59a = {
 
 static int simatic_ipc_batt_f7188x_remove(struct platform_device *pdev)
 {
-	return simatic_ipc_batt_remove(pdev, batt_lookup_table);
+	simatic_ipc_batt_remove(pdev, batt_lookup_table);
+
+	return 0;
 }
 
 static int simatic_ipc_batt_f7188x_probe(struct platform_device *pdev)

drivers/platform/x86/siemens/simatic-ipc-batt.c

@@ -146,10 +146,9 @@ static const struct hwmon_chip_info simatic_ipc_batt_chip_info = {
 	.info = simatic_ipc_batt_info,
 };
 
-int simatic_ipc_batt_remove(struct platform_device *pdev, struct gpiod_lookup_table *table)
+void simatic_ipc_batt_remove(struct platform_device *pdev, struct gpiod_lookup_table *table)
 {
 	gpiod_remove_lookup_table(table);
-	return 0;
 }
 EXPORT_SYMBOL_GPL(simatic_ipc_batt_remove);
 
@@ -230,7 +229,9 @@ EXPORT_SYMBOL_GPL(simatic_ipc_batt_probe);
 
 static int simatic_ipc_batt_io_remove(struct platform_device *pdev)
 {
-	return simatic_ipc_batt_remove(pdev, NULL);
+	simatic_ipc_batt_remove(pdev, NULL);
+
+	return 0;
 }
 
 static int simatic_ipc_batt_io_probe(struct platform_device *pdev)

drivers/platform/x86/siemens/simatic-ipc-batt.h

@@ -14,7 +14,7 @@
 int simatic_ipc_batt_probe(struct platform_device *pdev,
 			   struct gpiod_lookup_table *table);
 
-int simatic_ipc_batt_remove(struct platform_device *pdev,
+void simatic_ipc_batt_remove(struct platform_device *pdev,
 			     struct gpiod_lookup_table *table);
 
 #endif /* _SIMATIC_IPC_BATT_H */