[S] Change in coreboot[main]: soc/intel/xeon_sp/spr: Return resource count for create_ioat_domain

[Angel Pons (Code Review)]

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

Angel Pons has posted comments on this change by Shuo Liu. ( https://review.coreboot.org/c/coreboot/+/83195?usp=email )

Change subject: soc/intel/xeon_sp/spr: Return resource count for create_ioat_domain
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Patch Set 6: Code-Review+1

(1 comment)

File src/soc/intel/xeon_sp/spr/ioat.c:

https://review.coreboot.org/c/coreboot/+/83195/comment/614f9805_778a3a4f?usp... :
PS6, Line 63: 	unsigned int index = 0;
This should be initialised to the value of `res_count` if valid, and only fall back to 0 if it's NULL:

```suggestion
    unsigned int index = res_count ? *res_count : 0;
```