macsec: Fix use-after-free while sending the offloading packet

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AZL-53379 CVE-2024-50261 affecting package kernel for versions less than 6.6.64.2-1

In the Linux kernel, the following vulnerability has been resolved: macsec: Fix use-after-free while sending the offloading packet KASAN reports the following UAF. The metadatadst, which is used to store the SCI value for macsec offload, is already freed by metadatadstfree in macsecfreenetdev,...