[clang] [flang] [llvm] [mlir] [Flang]Fix for changed code at the end of AllocaIP. (PR #92430)

[Mats Petersson via cfe-commits]

Leporacanthicus wrote:

@ergawy Could you take a look at this, given that you did something similar [even if it was much smaller] recently?

https://github.com/llvm/llvm-project/pull/92430