ARM: cns3xxx: Fix refcount leak in cns3xxx_init

ARM: cns3xxx: Fix refcount leak in cns3xxx_init

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 v4.9.321 by commit b8b84e01ca94e2e1f5492353e9c24dab520b2e5b, it was introduced in version v3.10 by commit 415f59142d9d9dd023deaeb3b4dfc1aecdd3983c. For more details please see the references link.