power: supply: cw2015: Check devm_delayed_work_autocancel() return code

power: supply: cw2015: Check devm_delayed_work_autocancel() return code

Since devm_delayed_work_autocancel() may fail, add return code check and
exit cw_bat_probe() on error.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 0cb172a4918e ("power: supply: cw2015: Use device managed API to simplify the code")
Signed-off-by: Ivan Abramov <i.abramov@mt-integration.ru>
Link: https://patch.msgid.link/20251008120711.556021-1-i.abramov@mt-integration.ru
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>