[S] Change in coreboot[main]: device_util: Handle domain device in dev_get_domain

[Shuo Liu (Code Review)]

Attention is currently required from: Arthur Heymans, Christian Walter, Johnny Lin, Jonathan Zhang, Lean Sheng Tan, Patrick Rudolph, Tim Chu.

Shuo Liu has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81957?usp=email )

Change subject: device_util: Handle domain device in dev_get_domain
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Patch Set 1:

(1 comment)

File src/device/device_util.c:

https://review.coreboot.org/c/coreboot/+/81957/comment/02b3dfa2_34ce346b :
PS1, Line 255: dev
> This also fixes a potential NULL-deref of `dev` here. Maybe worth to mention […]

I suppose the NULL-deref should not be a problem in the previous codes? Since it is blocked by the while (dev && ..) checks where the while check will exit immediately upon dev == NULL and will not evaluate the remaining checks any more.