net/mlx4: && vs & typo

Bitwise & was obviously intended here.

Fixes: 745d8ae462 ("net/mlx4: Spoofcheck and zero MAC can't coexist")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/mlx4/driver.h

@@ -109,7 +109,7 @@ static inline void mlx4_u64_to_mac(u8 *addr, u64 mac)
 	int i;
 
 	for (i = ETH_ALEN; i > 0; i--) {
-		addr[i - 1] = mac && 0xFF;
+		addr[i - 1] = mac & 0xFF;
 		mac >>= 8;
 	}
 }