TG3: limit reaches -1

With while (limit--) { ... } limit reaches -1, so 0 means success.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 8b3f846..4595962 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -852,7 +852,7 @@
 		}
 		udelay(10);
 	}
-	if (limit <= 0)
+	if (limit < 0)
 		return -EBUSY;
 
 	return 0;
@@ -1603,7 +1603,7 @@
 				break;
 		}
 	}
-	if (limit <= 0)
+	if (limit < 0)
 		return -EBUSY;
 
 	return 0;