power: qpnp-bms: always release output locks in bms driver

If a SPMI read error occurs, there can be a situation where the
BMS_HOLD_OREG bit is not set and the bms param lock is never released.
This can cause deadlocks and battery SoC to never move. Fix this by
releasing the locks after handling an error.

Change-Id: I880b8e1ed2ff1ec3ce701f1e9922c9aac353766a
Signed-off-by: Xiaozhe Shi <xiaozhes@codeaurora.org>