geneve: fetching stats vs destroy race

Paolo Abenirequested to merge
pabeni/centos-stream-9:RHEL-93467_test2 into main

JIRA: https://issues.redhat.com/browse/RHEL-93467

the device per cpu tstats are destroyed at uninit time, but OVS (and even NL I suspect) could still reach for them even later. Using the core helpers move the stats free at netdevice deallocation time, closing the race.

Signed-off-by: Paolo Abeni pabeni@redhat.com

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