mtd: rawnand: meson: 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>
Acked-by: Liang Yang <liang.yang@amlogic.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

drivers/mtd/nand/raw/meson_nand.c

@@ -1320,6 +1320,7 @@ static int meson_nfc_nand_chips_init(struct device *dev,
 		ret = meson_nfc_nand_chip_init(dev, nfc, nand_np);
 		if (ret) {
 			meson_nfc_nand_chip_cleanup(nfc);
+			of_node_put(nand_np);
 			return ret;
 		}
 	}