bnx2: reset_task is crashing the kernel. Fixing it.

If bnx2 schedules a reset via the reset_task, e.g., due to a TX
timeout, it's possible for the NIC to be disabled with packets
pending for transmit.  In this case, napi_disable will loop forever,
eventually crashing the kernel.  This patch moves the disable of
the device to after the napi_disable call.
Signed-off-by: NBreno Leitao <leitao@linux.vnet.ibm.com>
Acked-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/bnx2.c

@@ -653,7 +653,6 @@ static void
 bnx2_netif_stop(struct bnx2 *bp)
 {
 	bnx2_cnic_stop(bp);
-	bnx2_disable_int_sync(bp);
 	if (netif_running(bp->dev)) {
 		bnx2_napi_disable(bp);
 		netif_tx_disable(bp->dev);
@@ -672,6 +671,7 @@ bnx2_netif_start(struct bnx2 *bp)
 			bnx2_cnic_start(bp);
 		}
 	}
+	bnx2_disable_int_sync(bp);
 }
 
 static void