[llvm] [Offload] Provide proper memory management for Images on host device (PR #146066)

[Ross Brunton via llvm-commits]

RossBrunton wrote:

@jhuber6 Can you have a look at this when you get a chance?

It's a response to your comment on https://github.com/llvm/llvm-project/pull/145716

https://github.com/llvm/llvm-project/pull/146066