net: mvpp2: Don't re-use loop iterator

This function has a nested loop.  The problem is that both the inside
and outside loop use the same variable as an iterator.  I found this
via static analysis so I'm not sure the impact.  It could be that it
loops forever or, more likely, the loop exits early.

Fixes: 3a616b9 ("net: mvpp2: Add TX flow control support for jumbo frames")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: NipaLocal <nipa@local>

drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c

@@ -953,13 +953,13 @@ static void mvpp2_bm_pool_update_fc(struct mvpp2_port *port,
 static void mvpp2_bm_pool_update_priv_fc(struct mvpp2 *priv, bool en)
 {
  struct mvpp2_port *port;
- int i;
+ int i, j;
 
  for (i = 0; i < priv->port_count; i++) {
  port = priv->port_list[i];
  if (port->priv->percpu_pools) {
- for (i = 0; i < port->nrxqs; i++)
- mvpp2_bm_pool_update_fc(port, &port->priv->bm_pools[i],
+ for (j = 0; j < port->nrxqs; j++)
+ mvpp2_bm_pool_update_fc(port, &port->priv->bm_pools[j],
  port->tx_fc & en);
  } else {
  mvpp2_bm_pool_update_fc(port, port->pool_long, port->tx_fc & en);