of: overlay: fix for_each_child.cocci warnings

Function "for_each_child_of_node" should have of_node_put() before goto.

Generated by: scripts/coccinelle/iterators/for_each_child.cocci

Fixes: 82c2d81361ec ("coccinelle: iterators: Add for_each_child.cocci script")
CC: Sumera Priyadarsini <[e-mail]>
Reported-by: kernel test robot <[e-mail]>
Signed-off-by: kernel test robot <[e-mail]>
Signed-off-by: Julia Lawall <[e-mail]>
Reviewed-by: Frank Rowand <[e-mail]>
Tested-by: Frank Rowand <[e-mail]>
Link: https://lore.kernel.org/r/alpine.DEB.2.22.394.2103221918450.2918@hadrien
Signed-off-by: Rob Herring <[e-mail]>

drivers/of/overlay.c

···
 		if (!fragment->target) {
 			of_node_put(fragment->overlay);
 			ret = -EINVAL;
+			of_node_put(node);
 			goto err_free_fragments;
 		}