drivers/net: return operator cleanup

Change "return (EXPR);" to "return EXPR;"

return is not a function, parentheses are not required.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index e7a2ba8..fdb438d 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -5389,8 +5389,7 @@
 {
 	u32 base = (u32) mapping & 0xffffffff;
 
-	return ((base > 0xffffdcc0) &&
-		(base + len + 8 < base));
+	return (base > 0xffffdcc0) && (base + len + 8 < base);
 }
 
 /* Test for DMA addresses > 40-bit */
@@ -5399,7 +5398,7 @@
 {
 #if defined(CONFIG_HIGHMEM) && (BITS_PER_LONG == 64)
 	if (tp->tg3_flags & TG3_FLAG_40BIT_DMA_BUG)
-		return (((u64) mapping + len) > DMA_BIT_MASK(40));
+		return ((u64) mapping + len) > DMA_BIT_MASK(40);
 	return 0;
 #else
 	return 0;