mtd: rawnand: meson: add missing ENOMEM check in meson_nfc_read_buf()

kzalloc() can return NULL if memory could not be allocated. Check the
return value of the kzalloc() call in meson_nfc_read_buf() to make it
consistent with other memory allocations within the meson_nand driver.

Fixes: 8fae856c ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Liang Yang <liang.yang@amlogic.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

drivers/mtd/nand/raw/meson_nand.c

@@ -528,6 +528,9 @@ static int meson_nfc_read_buf(struct nand_chip *nand, u8 *buf, int len)
 	u8 *info;
 
 	info = kzalloc(PER_INFO_BYTE, GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
 	ret = meson_nfc_dma_buffer_setup(nand, buf, len, info,
 					 PER_INFO_BYTE, DMA_FROM_DEVICE);
 	if (ret)