CVE-2025-22095

In the Linux kernel, the following vulnerability has been resolved:

PCI: brcmstb: Fix error path after a call to regulatorbulkget()

If the regulatorbulkget() returns an error and no regulators are created, we need to set their number to zero.

If we don't do this and the PCIe link up fails, a call to the regulatorbulkfree() will result in a kernel panic.

While at it, print the error value, as we cannot return an error upwards as the kernel will WARN() on an error from add_bus().

[kwilczynski: commit log, use comma in the message to match style with other similar messages]