From 9b51d072da1d27e1193e84708201c48e385ad912 Mon Sep 17 00:00:00 2001
From: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Date: Thu, 17 Nov 2022 21:15:46 +0800
Subject: [PATCH 1/1] RDMA/hfi: Decrease PCI device reference count in error
 path
Git-commit: 9b51d072da1d27e1193e84708201c48e385ad912
Patch-mainline: v6.2-rc1
References: git-fixes

pci_get_device() will increase the reference count for the returned
pci_dev, and also decrease the reference count for the input parameter
*from* if it is not NULL.

If we break out the loop in node_affinity_init() with 'dev' not NULL, we
need to call pci_dev_put() to decrease the reference count. Add missing
pci_dev_put() in error path.

Fixes: c513de490f80 ("IB/hfi1: Invalid NUMA node information can cause a divide by zero")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Link: https://lore.kernel.org/r/20221117131546.113280-1-wangxiongfeng2@huawei.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Acked-by: Nicolas Morey <nmorey@suse.com>
---
 drivers/infiniband/hw/hfi1/affinity.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/infiniband/hw/hfi1/affinity.c b/drivers/infiniband/hw/hfi1/affinity.c
index 877f8e84a672..77ee77d4000f 100644
--- a/drivers/infiniband/hw/hfi1/affinity.c
+++ b/drivers/infiniband/hw/hfi1/affinity.c
@@ -177,6 +177,8 @@ out:
 	for (node = 0; node < node_affinity.num_possible_nodes; node++)
 		hfi1_per_node_cntr[node] = 1;
 
+	pci_dev_put(dev);
+
 	return 0;
 }
 
-- 
2.38.0.1.gee35aeee4b76