mtd: rawnand: ingenic: Add of_node_put() before return

Each iteration of for_each_child_of_node puts the previous node, but in
the case of a return from the middle of the loop, there is no put, thus
causing a memory leak. Hence add an of_node_put before the return.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c

@@ -418,6 +418,7 @@ static int ingenic_nand_init_chips(struct ingenic_nfc *nfc,
 		ret = ingenic_nand_init_chip(pdev, nfc, np, i);
 		if (ret) {
 			ingenic_nand_cleanup_chips(nfc);
+			of_node_put(np);
 			return ret;
 		}