iio:pressure:ms5611: fix missing regulator_disable

Ensure optional regulator is properly disabled when present.

Fixes: 3145229f9191 ("iio:pressure:ms5611: power regulator support")
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2 files changed