mtd: nand: sunxi: Fix OOB bytes retrieval in read_chunks_dma()

The column address passed to the RNDOUT operation was missing the page
size offset.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Fixes: 614049a8d904 ("mtd: nand: sunxi: add support for DMA assisted operations")

drivers/mtd/nand/sunxi_nand.c

@@ -1094,7 +1094,8 @@ static int sunxi_nfc_hw_ecc_read_chunks_dma(struct mtd_info *mtd, uint8_t *buf,
 
 		if (oob_required && !erased) {
 			/* TODO: use DMA to retrieve OOB */
-			nand->cmdfunc(mtd, NAND_CMD_RNDOUT, oob_off, -1);
+			nand->cmdfunc(mtd, NAND_CMD_RNDOUT,
+				      mtd->writesize + oob_off, -1);
 			nand->read_buf(mtd, oob, ecc->bytes + 4);
 
 			sunxi_nfc_hw_ecc_get_prot_oob_bytes(mtd, oob, i,
@@ -1129,7 +1130,8 @@ static int sunxi_nfc_hw_ecc_read_chunks_dma(struct mtd_info *mtd, uint8_t *buf,
 			}
 
 			/* TODO: use DMA to retrieve OOB */
-			nand->cmdfunc(mtd, NAND_CMD_RNDOUT, oob_off, -1);
+			nand->cmdfunc(mtd, NAND_CMD_RNDOUT,
+				      mtd->writesize + oob_off, -1);
 			nand->read_buf(mtd, oob, ecc->bytes + 4);
 
 			ret = nand_check_erased_ecc_chunk(data,	ecc->size,