cifs: Return correct error code from smb2getenc_key
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.118 by commit 93f3339b22ba17e66f0808737467b70ba087eaec, it was introduced in version v4.11 by commit 61cfac6f267dabcf2740a7ec8a0295833b28b5f5. For more details please see the references link.