tty: serial: Fix refcount leak bug in ucc_uart.c
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 v4.14.291 by commit ec56f886f3bf0f15f7a3844d4c025e165b8e8de7. For more details please see the references link.