regulator: cros-ec: Fix error code in dev_err message

stable inclusion
from stable-5.10.46
commit 0ea923519a3fdd81ce9c69ddcbd60809657deb88
bugzilla: 168323
CVE: NA

--------------------------------

[ Upstream commit 3d681804 ]

Show proper error code instead of 0.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20210512075824.620580-1-axel.lin@ingics.com


Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Chen Jun <chenjun102@huawei.com>
Acked-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>