ASoC: stm32: sai: use devm_of_platform_populate()

Use devm_of_platform_populate() instead of of_platform_depopulate()
to simplify driver code.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/stm/stm32_sai.c

@@ -124,7 +124,6 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client,
 
 static int stm32_sai_probe(struct platform_device *pdev)
 {
-	struct device_node *np = pdev->dev.of_node;
 	struct stm32_sai_data *sai;
 	struct reset_control *rst;
 	struct resource *res;
@@ -184,14 +183,7 @@ static int stm32_sai_probe(struct platform_device *pdev)
 	sai->set_sync = &stm32_sai_set_sync;
 	platform_set_drvdata(pdev, sai);
 
-	return of_platform_populate(np, NULL, NULL, &pdev->dev);
-}
-
-static int stm32_sai_remove(struct platform_device *pdev)
-{
-	of_platform_depopulate(&pdev->dev);
-
-	return 0;
+	return devm_of_platform_populate(&pdev->dev);
 }
 
 MODULE_DEVICE_TABLE(of, stm32_sai_ids);
@@ -202,7 +194,6 @@ static struct platform_driver stm32_sai_driver = {
 		.of_match_table = stm32_sai_ids,
 	},
 	.probe = stm32_sai_probe,
-	.remove = stm32_sai_remove,
 };
 
 module_platform_driver(stm32_sai_driver);