PCI/DOE: Fix memory leak with CONFIG_DEBUG_OBJECTS=y

After a pci_doe_task completes, its work_struct needs to be destroyed
to avoid a memory leak with CONFIG_DEBUG_OBJECTS=y.

Fixes: 9d24322 ("PCI/DOE: Add DOE mailbox support functions")
Tested-by: Ira Weiny <[email protected]>
Signed-off-by: Lukas Wunner <[email protected]>
Reviewed-by: Ira Weiny <[email protected]>
Reviewed-by: Davidlohr Bueso <[email protected]>
Reviewed-by: Dan Williams <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Cc: [email protected] # v6.0+
Acked-by: Bjorn Helgaas <[email protected]>
Link: https://lore.kernel.org/r/775768b4912531c3b887d405fc51a50e465e1bf9.1678543498.git.lukas@wunner.de
Signed-off-by: Dan Williams <[email protected]>

Author: l1k

drivers/pci/doe.c

@@ -224,6 +224,7 @@ static void signal_task_complete(struct pci_doe_task *task, int rv)
 {
 	task->rv = rv;
 	task->complete(task);
+	destroy_work_on_stack(&task->work);
 }
 
 static void signal_task_abort(struct pci_doe_task *task, int rv)