AZL-89352

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

PCI: endpoint: Add missing NULL check for alloc_workqueue()

allocworkqueue() can return NULL on memory allocation failure. Without proper error checking, this may lead to a NULL pointer dereference when queuework() is later called with the NULL workqueue pointer in epfntbepc_init().

Add a NULL check immediately after alloc_workqueue() and return -ENOMEM on failure to prevent the driver from loading with an invalid workqueue pointer.