nvme: Fix sync controller reset return

If a controller reset is requested while the device has no namespaces,
we were incorrectly returning ENETRESET. This patch adds the check for
ADMIN_ONLY controller state to indicate a successful reset.

Fixes: 8000d1fd  ("nvme-rdma: fix sysfs invoked reset_ctrl error flow ")
Cc: <stable@vger.kernel.org>
Signed-off-by: NCharles Machalow <charles.machalow@intel.com>
[changelog]
Signed-off-by: NKeith Busch <keith.busch@intel.com>

drivers/nvme/host/core.c

@@ -118,7 +118,8 @@ int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl)
 	ret = nvme_reset_ctrl(ctrl);
 	if (!ret) {
 		flush_work(&ctrl->reset_work);
-		if (ctrl->state != NVME_CTRL_LIVE)
+		if (ctrl->state != NVME_CTRL_LIVE &&
+		    ctrl->state != NVME_CTRL_ADMIN_ONLY)
 			ret = -ENETRESET;
 	}