spi: sprd: Convert to platform remove callback

Merge series from Uwe Kleine-König <u.kleine-koenig@pengutronix.de>:

An early error return from a remove callback is usally wrong. In the
case of the spi-sprd driver it's not that critical because the skipped
steps are mainly undoing the things that a successful runtime-resume
would have done.

Still it's cleaner to not exit early and not return an (mostly ignored)
error value. The second patch converts to .remove_new (which is the
motivation for this series).

drivers/spi/spi-sprd.c

@@ -1002,27 +1002,25 @@ static int sprd_spi_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int sprd_spi_remove(struct platform_device *pdev)
+static void sprd_spi_remove(struct platform_device *pdev)
 {
 	struct spi_controller *sctlr = platform_get_drvdata(pdev);
 	struct sprd_spi *ss = spi_controller_get_devdata(sctlr);
 	int ret;
 
-	ret = pm_runtime_resume_and_get(ss->dev);
-	if (ret < 0) {
+	ret = pm_runtime_get_sync(ss->dev);
+	if (ret < 0)
 		dev_err(ss->dev, "failed to resume SPI controller\n");
-		return ret;
-	}
 
 	spi_controller_suspend(sctlr);
 
-	if (ss->dma.enable)
-		sprd_spi_dma_release(ss);
-	clk_disable_unprepare(ss->clk);
+	if (ret >= 0) {
+		if (ss->dma.enable)
+			sprd_spi_dma_release(ss);
+		clk_disable_unprepare(ss->clk);
+	}
 	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
-
-	return 0;
 }
 
 static int __maybe_unused sprd_spi_runtime_suspend(struct device *dev)
@@ -1076,7 +1074,7 @@ static struct platform_driver sprd_spi_driver = {
 		.pm = &sprd_spi_pm_ops,
 	},
 	.probe = sprd_spi_probe,
-	.remove  = sprd_spi_remove,
+	.remove_new = sprd_spi_remove,
 };
 
 module_platform_driver(sprd_spi_driver);