The call to of_find_node_by_name returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./drivers/pci/hotplug/rpadlpar_core.c:55:1-7: ERROR: missing of_node_put; 
acquired a node pointer with refcount incremented on line 42, but without a 
corresponding object release within this function

Signed-off-by: Wen Yang <wen.yan...@zte.com.cn>
Cc: Tyrel Datwyler <tyr...@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Michael Ellerman <m...@ellerman.id.au>
Cc: Bjorn Helgaas <bhelg...@google.com>
Cc: linux-...@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-ker...@vger.kernel.org
---
 drivers/pci/hotplug/rpadlpar_core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/hotplug/rpadlpar_core.c 
b/drivers/pci/hotplug/rpadlpar_core.c
index e2356a9..f3f42ff 100644
--- a/drivers/pci/hotplug/rpadlpar_core.c
+++ b/drivers/pci/hotplug/rpadlpar_core.c
@@ -52,6 +52,7 @@ static struct device_node *find_vio_slot_node(char *drc_name)
                        break;
        }
 
+       of_node_put(parent);
        return dn;
 }
 
-- 
2.9.5

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