powerpc/cell: Add missing of_node_put()s

Use of_node_put() for of_find_node_by_path() and
of_find_node_by_phandle() to keep refcount balance.

Signed-off-by: Liang He <windhl@126.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220619072335.4067728-1-windhl@126.com

arch/powerpc/platforms/cell/setup.c

@@ -167,6 +167,8 @@ static int __init cell_publish_devices(void)
 		of_platform_device_create(np, NULL, NULL);
 	}
 
+	of_node_put(root);
+
 	/* There is no device for the MIC memory controller, thus we create
 	 * a platform device for it to attach the EDAC driver to.
 	 */

arch/powerpc/platforms/cell/spu_manage.c

@@ -488,6 +488,8 @@ static void __init init_affinity_node(int cbe)
 				avoid_ph = vic_dn->phandle;
 			}
 
+			of_node_put(vic_dn);
+
 			list_add_tail(&spu->aff_list, &last_spu->aff_list);
 			last_spu = spu;
 			break;