siox: fix possible memory leak in sioxdeviceadd()
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 v5.4.225 by commit f9fe7ba4ea5b24ffdf8e125f660aca3ba4a147fb, it was introduced in version v4.16 by commit bbecb07fa0af9a41507ce06d4631fdb3b5059417. For more details please see the references link.