Merge tag 'nvme-5.9-2020-10-07' of git://git.infradead.org/nvme into block-5.9

Pull NVMe fix from Christoph:

"nvme fix for 5.9:

 - fix a recently introduced controller leak (Logan Gunthorpe)"

* tag 'nvme-5.9-2020-10-07' of git://git.infradead.org/nvme:
  nvme-core: put ctrl ref when module ref get fail

Author: axboe

drivers/nvme/host/core.c

@@ -3265,8 +3265,10 @@ static int nvme_dev_open(struct inode *inode, struct file *file)
 	}
 
 	nvme_get_ctrl(ctrl);
-	if (!try_module_get(ctrl->ops->module))
+	if (!try_module_get(ctrl->ops->module)) {
+		nvme_put_ctrl(ctrl);
 		return -EINVAL;
+	}
 
 	file->private_data = ctrl;
 	return 0;