spi: mxic: Don't leak SPI master in probe error path

commit cc53711 upstream.

If the calls to devm_clk_get() or devm_ioremap_resource() fail on probe
of the Macronix SPI driver, the spi_master struct is erroneously not freed.

Fix by switching over to the new devm_spi_alloc_master() helper.

Fixes: b942d80 ("spi: Add MXIC controller driver")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: <stable@vger.kernel.org> # v5.0+: 5e844cc: spi: Introduce device-managed SPI controller allocation
Cc: <stable@vger.kernel.org> # v5.0+
Cc: Mason Yang <masonccyang@mxic.com.tw>
Link: https://lore.kernel.org/r/4fa6857806e7e75741c05d057ac9df3564460114.1607286887.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/spi/spi-mxic.c

@@ -529,7 +529,7 @@ static int mxic_spi_probe(struct platform_device *pdev)
 	struct mxic_spi *mxic;
 	int ret;
 
-	master = spi_alloc_master(&pdev->dev, sizeof(struct mxic_spi));
+	master = devm_spi_alloc_master(&pdev->dev, sizeof(struct mxic_spi));
 	if (!master)
 		return -ENOMEM;
 
@@ -574,15 +574,9 @@ static int mxic_spi_probe(struct platform_device *pdev)
 	ret = spi_register_master(master);
 	if (ret) {
 		dev_err(&pdev->dev, "spi_register_master failed\n");
-		goto err_put_master;
+		pm_runtime_disable(&pdev->dev);
 	}
 
-	return 0;
-
-err_put_master:
-	spi_master_put(master);
-	pm_runtime_disable(&pdev->dev);
-
 	return ret;
 }