mtd: rawnand: sunxi: Stop using nand_release()

This helper is not very useful and very often people get confused:
they use nand_release() instead of nand_cleanup().

Let's stop using nand_release() by calling mtd_device_unregister() and
nand_cleanup() directly.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200519130035.1883-55-miquel.raynal@bootlin.com

drivers/mtd/nand/raw/sunxi_nand.c

@@ -2039,13 +2039,18 @@ static int sunxi_nand_chips_init(struct device *dev, struct sunxi_nfc *nfc)
 static void sunxi_nand_chips_cleanup(struct sunxi_nfc *nfc)
 {
 	struct sunxi_nand_chip *sunxi_nand;
+	struct nand_chip *chip;
+	int ret;
 
 	while (!list_empty(&nfc->chips)) {
 		sunxi_nand = list_first_entry(&nfc->chips,
 					      struct sunxi_nand_chip,
 					      node);
-		nand_release(&sunxi_nand->nand);
-		sunxi_nand_ecc_cleanup(&sunxi_nand->nand.ecc);
+		chip = &sunxi_nand->nand;
+		ret = mtd_device_unregister(nand_to_mtd(chip));
+		WARN_ON(ret);
+		nand_cleanup(chip);
+		sunxi_nand_ecc_cleanup(&chip->ecc);
 		list_del(&sunxi_nand->node);
 	}
 }