mmc: omap_hsmmc: fix host reference after mmc_free_host

struct omap_hsmmc_host *host should not be accessed after mmc_free_host().
Reorder mmc_free_host() after iounmap(host->base).

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 54bfd0c..d5057415 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -2009,8 +2009,8 @@
 		clk_put(host->dbclk);
 	}
 
-	mmc_free_host(host->mmc);
 	iounmap(host->base);
+	mmc_free_host(host->mmc);
 	omap_hsmmc_gpio_free(pdev->dev.platform_data);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);