mtd: nand: hisi504: return error code of nand_scan_ident() on error

The nand_scan_ident() returns an appropriate error value when it
fails.  Use it instead of the fixed error code -ENODEV.
(This driver is already doing so for nand_scan_tail().)
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NBoris Brezillon <boris.brezillon@free-electrons.com>

drivers/mtd/nand/hisi504_nand.c

@@ -774,10 +774,8 @@ static int hisi_nfc_probe(struct platform_device *pdev)
 	}
 
 	ret = nand_scan_ident(mtd, max_chips, NULL);
-	if (ret) {
-		ret = -ENODEV;
+	if (ret)
 		goto err_res;
-	}
 
 	host->buffer = dmam_alloc_coherent(dev, mtd->writesize + mtd->oobsize,
 		&host->dma_buffer, GFP_KERNEL);