[coreboot-gerrit] Change in ...coreboot[master]: riscv: fix run_payload

[Xiang Wang (Code Review)]

Xiang Wang has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/33462 )

Change subject: riscv: fix run_payload
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Patch Set 2:
> Patch Set 2: Code-Review+1
>
> Thanks!
> Please change "riscv: fix run_payload" to something more specific.

Do you have suggest?
> Also mention how the change has been tested.

I read this code and found a logic error when setting the MPP field of mstatus.
If you do not return via mret, MPIE will not work.
I have only tested the situation of return to M-Mode.