of: fix "/cpus" reference leak in of_numa_parse_cpu_nodes()

The call to of_find_node_by_path("/cpus") returns the cpus device_node
with its reference count incremented. There is no matching of_node_put()
call in of_numa_parse_cpu_nodes() which results in a leaked reference
to the "/cpus" node.

This patch adds an of_node_put() to release the reference.

fixes: 298535c00a2c ("of, numa: Add NUMA of binding implementation.")
Signed-off-by: Tyrel Datwyler <[e-mail]>
Acked-by: David Daney <[e-mail]>
Cc: [e-mail] # v4.7+
Signed-off-by: Rob Herring <[e-mail]>

drivers/of/of_numa.c

···
 		else
 			node_set(nid, numa_nodes_parsed);
 	}
+
+	of_node_put(cpus);
 }
 
 static int __init of_numa_parse_memory_nodes(void)