sis900 warning fixes

drivers/net/sis900.c: In function 'sis900_reset_phy':
drivers/net/sis900.c:972: warning: 'status' may be used uninitialized in this function
drivers/net/sis900.c: In function 'sis900_check_mode':
drivers/net/sis900.c:1431: warning: 'status' may be used uninitialized in this function
drivers/net/sis900.c: In function 'sis900_timer':
drivers/net/sis900.c:1467: warning: 'status' may be used uninitialized in this function

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/sis900.c b/drivers/net/sis900.c
index fb2b530..b3750f2 100644
--- a/drivers/net/sis900.c
+++ b/drivers/net/sis900.c
@@ -968,10 +968,10 @@
 
 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
 {
-	int i = 0;
+	int i;
 	u16 status;
 
-	while (i++ < 2)
+	for (i = 0; i < 2; i++)
 		status = mdio_read(net_dev, phy_addr, MII_STATUS);
 
 	mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
@@ -1430,7 +1430,7 @@
 	int i = 0;
 	u32 status;
 
-	while (i++ < 2)
+	for (i = 0; i < 2; i++)
 		status = mdio_read(net_dev, phy_addr, MII_STATUS);
 
 	if (!(status & MII_STAT_LINK)){
@@ -1466,9 +1466,9 @@
 	int phy_addr = sis_priv->cur_phy;
 	u32 status;
 	u16 autoadv, autorec;
-	int i = 0;
+	int i;
 
-	while (i++ < 2)
+	for (i = 0; i < 2; i++)
 		status = mdio_read(net_dev, phy_addr, MII_STATUS);
 
 	if (!(status & MII_STAT_LINK))