fix null pointer access in mach-dir-600-a1.c machine setup (#8671)

SVN-Revision: 25043

target/linux/ar71xx/files/arch/mips/ar71xx/mach-dir-600-a1.c

@@ -118,8 +118,8 @@ static void __init dir_600_a1_setup(void)
 
 	if (nvram_parse_mac_addr(nvram, DIR_600_A1_NVRAM_SIZE,
 				"lan_mac=", mac_buff) == 0) {
-		ar71xx_init_mac(ar71xx_eth0_data.mac_addr, mac, 0);
-		ar71xx_init_mac(ar71xx_eth1_data.mac_addr, mac, 1);
+		ar71xx_init_mac(ar71xx_eth0_data.mac_addr, mac_buff, 0);
+		ar71xx_init_mac(ar71xx_eth1_data.mac_addr, mac_buff, 1);
 		mac = mac_buff;
 	}