Describe CVE-2021-47147.
What is CVE-2021-47147?
In the Linux kernel, the following vulnerability has been resolved:

ptp: ocp: Fix a resource leak in an error handling path

If an error occurs after a successful 'pci_ioremap_bar()' call, it must be
undone by a corresponding 'pci_iounmap()' call, as already done in the
remove function..