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 v4.19.267 by commit 0a5da069603ecc3d7aa09167450235462adaa295, it was introduced in version v4.16 by commit bbecb07fa0af9a41507ce06d4631fdb3b5059417. For more details please see the references link.