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/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c
index 14f01d1..ac1d323 100644
--- a/drivers/net/hamradio/bpqether.c
+++ b/drivers/net/hamradio/bpqether.c
@@ -168,7 +168,7 @@
 
 static inline int dev_is_ethdev(struct net_device *dev)
 {
-	return (dev->type == ARPHRD_ETHER && strncmp(dev->name, "dummy", 5));
+	return dev->type == ARPHRD_ETHER && strncmp(dev->name, "dummy", 5);
 }
 
 /* ------------------------------------------------------------------------ */