rt2x00: clear up IV's on key removal

mainline inclusion
from mainline-v5.3-rc8
commit 14d5e14c
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I96GO9
CVE: CVE-2023-52595

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=14d5e14c8a6c



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After looking at code I realized that my previous fix
95844124 ("rt2x00: clear IV's on start to fix AP mode regression")
was incomplete. We can still have wrong IV's after re-keyring.
To fix that, clear up IV's also on key removal.

Fixes: 710e6cc1 ("rt2800: do not nullify initialization vector data")
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
tested-by: Emil Karlson <jekarl@iki.fi>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Pu Lehui <pulehui@huawei.com>