[llvm] [mlir] [Flang][MLIR][OpenMP] Fix Target Data if (present(...)) causing LLVM-IR branching error (PR #123771)

[via llvm-commits]

agozillon wrote:

> LLVM Buildbot has detected a new failure on builder `openmp-offload-libc-amdgpu-runtime` running on `omp-vega20-1` while building `mlir,offload` at step 7 "Add check check-offload".
> 
> Full details are available at: https://lab.llvm.org/buildbot/#/builders/73/builds/12741
> 
> Here is the relevant piece of the build log for the reference

Seems to be a sporadic failure of the test (and a few others) on that particular buildbot that occurs fairly frequently across all the test builds, at least for the past few days. So it seems unrelated and ignorable. 

https://github.com/llvm/llvm-project/pull/123771