Fix segment map modification in OOM scenarios (dotnet/coreclr#9241)

Fix segment map modification in OOM scenarios (dotnet/coreclr#9241)

* Fix an issue where the segment mapping table is not reverted
back to its original state when failing to commit the mark array
in an OOM scenario. Fixes dotnet/coreclr#9064

* Code review feedback

* Update seg_mapping_table before setting g_gc_*_address

* Add a barrier between the seg_mapping_table write and updates to g_gc_*_address

Commit migrated from https://github.com/dotnet/coreclr/commit/5a7dc18f5985bd28ea798e6a9fc4b8ad5fef09ca