stmmac: Clear variable when destroying workqueue
JIRA: https://issues.redhat.com/browse/RHEL-31824
CVE: CVE-2024-26802
Signed-off-by: Izabela Bakollari ibakolla@redhat.com
JIRA: https://issues.redhat.com/browse/RHEL-31824
CVE: CVE-2024-26802
Signed-off-by: Izabela Bakollari ibakolla@redhat.com