nvme-apple: fix controller shutdown in apple_nvme_disable

nvme_shutdown_ctrl already shuts the controller down, there is no
need to also call nvme_disable_ctrl for the shutdown case.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Eric Curtin <ecurtin@redhat.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Hector Martin <marcan@marcan.st>

drivers/nvme/host/apple.c

@@ -831,7 +831,8 @@ static void apple_nvme_disable(struct apple_nvme *anv, bool shutdown)
 
 		if (shutdown)
 			nvme_shutdown_ctrl(&anv->ctrl);
-		nvme_disable_ctrl(&anv->ctrl);
+		else
+			nvme_disable_ctrl(&anv->ctrl);
 	}
 
 	WRITE_ONCE(anv->ioq.enabled, false);