mmc: omap_hsmmc: Fix "Unbalanced pm_runtime_enable!" warning

Otherwise we can get following warning when re-loading the omap_hsmmc
driver module when gpio_twl4030 module is not loaded:

omap_hsmmc omap_hsmmc.0: Unbalanced pm_runtime_enable!
omap_hsmmc omap_hsmmc.0: Unable to grab MMC CD IRQ
omap_hsmmc: probe of omap_hsmmc.0 failed with error -22
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

drivers/mmc/host/omap_hsmmc.c

@@ -1935,6 +1935,7 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 err_irq:
 	pm_runtime_mark_last_busy(host->dev);
 	pm_runtime_put_autosuspend(host->dev);
+	pm_runtime_disable(host->dev);
 	clk_put(host->fclk);
 	if (host->got_dbclk) {
 		clk_disable(host->dbclk);