mfd: arizona: Disable DCVDD before we destroy the MFD

As DCVDD is probably supplied by a child of the MFD device move its
disable to before we destroy the MFD children as the regulator likely
won't exist after that.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/arizona-core.c

@@ -1025,6 +1025,8 @@ int arizona_dev_exit(struct arizona *arizona)
 {
 	pm_runtime_disable(arizona->dev);
 
+	regulator_disable(arizona->dcvdd);
+
 	mfd_remove_devices(arizona->dev);
 	arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona);
 	arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);
@@ -1032,7 +1034,7 @@ int arizona_dev_exit(struct arizona *arizona)
 	arizona_irq_exit(arizona);
 	if (arizona->pdata.reset)
 		gpio_set_value_cansleep(arizona->pdata.reset, 0);
-	regulator_disable(arizona->dcvdd);
+
 	regulator_bulk_disable(ARRAY_SIZE(arizona->core_supplies),
 			       arizona->core_supplies);
 	return 0;