Impact: Move variable declaration as far inner as possible.
Fix this sparse warning:
  drivers/net/igb/igb_main.c:1895:21: warning: symbol 'j' shadows an earlier one
  drivers/net/igb/igb_main.c:1855:16: originally declared here
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
        struct e1000_hw *hw = &adapter->hw;
        u32 rctl, rxcsum;
        u32 rxdctl;
-       int i, j;
+       int i;
 
        /* disable receives while setting up the descriptors */
        rctl = rd32(E1000_RCTL);
         * the Base and Length of the Rx Descriptor Ring */
        for (i = 0; i < adapter->num_rx_queues; i++) {
                struct igb_ring *ring = &adapter->rx_ring[i];
-               j = ring->reg_idx;
+               int j = ring->reg_idx;
                rdba = ring->dma;
                wr32(E1000_RDBAL(j),
                     rdba & 0x00000000ffffffffULL);