scratch is already being initialized to avoid
overwriting offset_reg. We will need to use it instead of ip.

Change-Id: I4ffb93341f64dd8520e2409d6a28783738627ca2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3322977Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#78303}