[llvm] [Mips] Fix compiler crash when returning fp128 after calling a functi… (PR #117525)

[via llvm-commits]

yingopq wrote:

> Can you please provide some more context on this fix? It's not really obvious to me how the call returning `{ i8, i128 }` and the following return of `fp128` are related at all.

OK, I would update the commit message.

https://github.com/llvm/llvm-project/pull/117525