CVE-2022-50672 mailbox: zynq-ipi: fix error handling while device_register() fails

In the Linux kernel, the following vulnerability has been resolved: mailbox: zynq-ipi: fix error handling while deviceregister fails If deviceregister fails, it has two issues: 1. The name allocated by devsetname is leaked. 2. The parent of device is not NULL, deviceunregister is called in...