[llvm] [RISCV] Fix assertion failure when using -fstack-clash-protection (PR #135248)

[Paul Kirth via llvm-commits]

ilovepi wrote:

### Merge activity

* **Apr 18, 12:10 PM EDT**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/135248).


https://github.com/llvm/llvm-project/pull/135248