mfd: Don't free unallocated arizona supplies on error

ARRAY_SIZE() may be larger than the number of supplies actually used.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/arizona-core.c

@@ -514,7 +514,7 @@ int __devinit arizona_dev_init(struct arizona *arizona)
 err_dcvdd:
 	regulator_disable(arizona->dcvdd);
 err_enable:
-	regulator_bulk_disable(ARRAY_SIZE(arizona->core_supplies),
+	regulator_bulk_disable(arizona->num_core_supplies,
 			       arizona->core_supplies);
 err_early:
 	mfd_remove_devices(dev);