nvme: Use nvme_state_terminal helper

Improve code readability.
Reviewed-by: NMax Gurtovoy <maxg@mellanox.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NIsrael Rukshin <israelr@mellanox.com>
Signed-off-by: NKeith Busch <kbusch@kernel.org>

drivers/nvme/host/core.c

@@ -2633,8 +2633,7 @@ static bool nvme_validate_cntlid(struct nvme_subsystem *subsys,
 	lockdep_assert_held(&nvme_subsystems_lock);
 
 	list_for_each_entry(tmp, &subsys->ctrls, subsys_entry) {
-		if (tmp->state == NVME_CTRL_DELETING ||
-		    tmp->state == NVME_CTRL_DEAD)
+		if (nvme_state_terminal(tmp))
 			continue;
 
 		if (tmp->cntlid == ctrl->cntlid) {