power: supply: bq25890: Disable PUMPX_EN on errors

When bq25890_pump_express_work encounters an errors disable
the PUMPX_EN flag, just like the work does on a successful exit.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>