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svn:author
V 7
git2svn
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svn:date
V 27
2022-12-28T09:04:43.238290Z
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svn:log
V 628
pf: fix pfi_ifnet leak on interface removal

The detach of the interface and group were leaving pfi_ifnet memory
behind. Check if the kif still has references, and clean it up if it
doesn't

On interface detach, the group deletion was notified first and then a
change notification was sent. This would recreate the group in the kif
layer. Reorder the change to before the delete.

PR:		257218
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D37569

(cherry picked from commit bfeef0d32a0036bf6bec93a439e0466efe6f4482)

Git Hash:   5f7454d8904ca68697dda569f71af6ef5ec178c7
Git Author: nreilly@blackberry.com
END