mfd: exynos-lpass: Fix another error handling path in exynos_lpass_probe()

If devm_of_platform_populate() fails, some clean-up needs to be done, as
already done in the remove function.

Add a new devm_add_action_or_reset() to fix the leak in the probe and
remove the need of a remove function.

Fixes: c695abab2429 ("mfd: Add Samsung Exynos Low Power Audio Subsystem driver")
Signed-off-by: Christophe JAILLET <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/69471e839e[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

drivers/mfd/exynos-lpass.c

···
 	.fast_io	= true,
 };
 
+static void exynos_lpass_disable_lpass(void *data)
+{
+	struct platform_device *pdev = data;
+	struct exynos_lpass *lpass = platform_get_drvdata(pdev);
+
+	pm_runtime_disable(&pdev->dev);
+	if (!pm_runtime_status_suspended(&pdev->dev))
+		exynos_lpass_disable(lpass);
+}
+
 static int exynos_lpass_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct exynos_lpass *lpass;
 	void __iomem *base_top;
+	int ret;
 
 	lpass = devm_kzalloc(dev, sizeof(*lpass), GFP_KERNEL);
 	if (!lpass)
···
 	pm_runtime_enable(dev);
 	exynos_lpass_enable(lpass);
 
+	ret = devm_add_action_or_reset(dev, exynos_lpass_disable_lpass, pdev);
+	if (ret)
+		return ret;
+
 	return devm_of_platform_populate(dev);
-}
-
-static void exynos_lpass_remove(struct platform_device *pdev)
-{
-	struct exynos_lpass *lpass = platform_get_drvdata(pdev);
-
-	pm_runtime_disable(&pdev->dev);
-	if (!pm_runtime_status_suspended(&pdev->dev))
-		exynos_lpass_disable(lpass);
 }
 
 static int __maybe_unused exynos_lpass_suspend(struct device *dev)
···
 		.of_match_table	= exynos_lpass_of_match,
 	},
 	.probe	= exynos_lpass_probe,
-	.remove	= exynos_lpass_remove,
 };
 module_platform_driver(exynos_lpass_driver);