mtd: rawnand: free the nand_device object

This patch releases the resources allocated in nanddev_init function.

Fixes: a7ab085d ("mtd: rawnand: Initialize the nand_device object")
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/1579767768-32295-1-git-send-email-christophe.kerello@st.com

drivers/mtd/nand/raw/nand_base.c

@@ -5912,6 +5912,8 @@ void nand_cleanup(struct nand_chip *chip)
 	    chip->ecc.algo == NAND_ECC_BCH)
 		nand_bch_free((struct nand_bch_control *)chip->ecc.priv);
 
+	nanddev_cleanup(&chip->base);
+
 	/* Free bad block table memory */
 	kfree(chip->bbt);
 	kfree(chip->data_buf);