Perf-event array : Clean up race condition fix in #5229

#5229 fixed several OOB accesses and race conditions in the ring buffer and perf event array.

It introduced an additional IOCTL call during `free` through (to report consumer offset update).

This adds complexity to validate the code, and we will be deprecating the async callbacks, so should come up with a simpler solution and remove the additional IOCTL call during cleanup if possible.