nvme-pci: fix queue unquiesce check on slot_reset

JIRA: https://issues.redhat.com/browse/RHEL-96225

A zero return means the reset was successfully scheduled. We don't want
to unquiesce the queues while the reset_work is pending, as that will
just flush out requeued requests to a failed completion.

Fixes: 71a5bb1 ("nvme: ensure disabling pairs with unquiesce")
Reported-by: Dhankaran Singh Ajravat <dhankaran@meta.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
(cherry picked from commit a754012)
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>

Author: maurizio-lombardi

drivers/nvme/host/pci.c

@@ -3459,7 +3459,7 @@ static pci_ers_result_t nvme_slot_reset(struct pci_dev *pdev)
 
 	dev_info(dev->ctrl.device, "restart after slot reset\n");
 	pci_restore_state(pdev);
-	if (!nvme_try_sched_reset(&dev->ctrl))
+	if (nvme_try_sched_reset(&dev->ctrl))
 		nvme_unquiesce_io_queues(&dev->ctrl);
 	return PCI_ERS_RESULT_RECOVERED;
 }