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

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: c513de4 ("IB/hfi1: Invalid NUMA node information can cause a divide by zero")
Signed-off-by: Xiongfeng Wang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Leon Romanovsky <[email protected]>

drivers/infiniband/hw/hfi1/affinity.c

@@ -177,6 +177,8 @@ int node_affinity_init(void)
 	for (node = 0; node < node_affinity.num_possible_nodes; node++)
 		hfi1_per_node_cntr[node] = 1;
 
+	pci_dev_put(dev);
+
 	return 0;
 }