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/net/irda/discovery.c b/net/irda/discovery.c
index c1c8ae9..36c3f03 100644
--- a/net/irda/discovery.c
+++ b/net/irda/discovery.c
@@ -315,7 +315,7 @@
 
 	/* Get the actual number of device in the buffer and return */
 	*pn = i;
-	return(buffer);
+	return buffer;
 }
 
 #ifdef CONFIG_PROC_FS