net: systemport: correctly check for RX_STATUS_OVFLOW flag

We were missing an and comparison with status to check whether
RX_STATUS_OVFLOW is asserted or not in the per-packet status word, fix
that.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bcmsysport.c

@@ -514,7 +514,7 @@ static unsigned int bcm_sysport_desc_rx(struct bcm_sysport_priv *priv,
 
 		if (unlikely(status & (RX_STATUS_ERR | RX_STATUS_OVFLOW))) {
 			netif_err(priv, rx_err, ndev, "error packet\n");
-			if (RX_STATUS_OVFLOW)
+			if (status & RX_STATUS_OVFLOW)
 				ndev->stats.rx_over_errors++;
 			ndev->stats.rx_dropped++;
 			ndev->stats.rx_errors++;