RDMA/hfi: Decrease PCI device reference count in error path

[ Upstream commit dfe9270b4ec682e47df6f86e09cdfdb4cc340dbe ]

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: 0f02797f2ce7 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/infiniband/hw/hfi1/affinity.c b/drivers/infiniband/hw/hfi1/affinity.c
index 1aeea5d65c0159756605dbfbc660dce7e1c4bd13..832b878fa67eba1c8692dc3421234291d9ebac13 100644 (file)
--- a/drivers/infiniband/hw/hfi1/affinity.c
+++ b/drivers/infiniband/hw/hfi1/affinity.c
@@ -218,6 +218,8 @@ out:
        for (node = 0; node < node_affinity.num_possible_nodes; node++)
                hfi1_per_node_cntr[node] = 1;
 
+       pci_dev_put(dev);
+
        return 0;
 }