drivers/video/backlight/pm8941-wled.c:404:1-3: WARNING: PTR_ERR_OR_ZERO can be used

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   85051e295fb7487fd22546f86058e99d5266dd88
commit: 7ddbc2423c3301280b883bbb04b998203f30312c backlight: pm8941-wled: Move PM8941 WLED driver to backlight
date:   9 weeks ago


coccinelle warnings: (new ones prefixed by >>)

>> drivers/video/backlight/pm8941-wled.c:404:1-3: WARNING: PTR_ERR_OR_ZERO can be used

Please review and possibly fold the followup patch.

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