net: cortina_ni: buffer overrun

When copying to a u32 field we should use sizeof(u32) and not
sizeof(*u32) in memcpy.

On 64bit systems like cortina_presidio-asic-emmc_defconfig using
sizeof(*u32) leads to a buffer overrun.

Fixes: febe13b438 ("net: cortina_ni: Add eth support for Cortina Access CAxxxx SoCs")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-By: Ramon Fried <rfried.dev@gmail.com>

drivers/net/cortina_ni.c

@@ -713,7 +713,7 @@ static int cortina_eth_recv(struct udevice *dev, int flags, uchar **packetp)
 							 priv->rx_xram_end_adr);
 
 			memcpy(&packet_status, rx_xram_ptr,
-			       sizeof(rx_xram_ptr));
+			       sizeof(*rx_xram_ptr));
 			if (packet_status.valid == 0) {
 				debug("%s: Invalid Packet !!, ", __func__);
 				debug("next_link=%d\n", next_link);