mmc: sdhci-pltfm: use devm_ioremap()

Use the managed variant of ioremap().
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-pltfm.c

@@ -160,7 +160,8 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
 		goto err_request;
 	}
 
-	host->ioaddr = ioremap(iomem->start, resource_size(iomem));
+	host->ioaddr = devm_ioremap(&pdev->dev, iomem->start,
+				    resource_size(iomem));
 	if (!host->ioaddr) {
 		dev_err(&pdev->dev, "failed to remap registers\n");
 		ret = -ENOMEM;
@@ -190,7 +191,6 @@ void sdhci_pltfm_free(struct platform_device *pdev)
 {
 	struct sdhci_host *host = platform_get_drvdata(pdev);
 
-	iounmap(host->ioaddr);
 	sdhci_free_host(host);
 }
 EXPORT_SYMBOL_GPL(sdhci_pltfm_free);