In AnalyzeLoopAssignment, tail calls were marked as invalidating the
memory cache, which in turn caused its reloading in generated code.
This is not correct since return calls end the current control branch.

Change-Id: Id3b5e60a810915ace6d9b0b13160177251adaa5e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2578981Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71661}