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/irda/donauboe.c b/drivers/net/irda/donauboe.c
index 48bd5ec..b626ccc 100644
--- a/drivers/net/irda/donauboe.c
+++ b/drivers/net/irda/donauboe.c
@@ -217,7 +217,7 @@
   for (i = 0; i < len; ++i)
     fcs.value = irda_fcs (fcs.value, *(buf++));
 
-  return (fcs.value == GOOD_FCS);
+  return fcs.value == GOOD_FCS;
 }
 
 /***********************************************************************/
@@ -759,7 +759,7 @@
   if (fir)
     {
       memset (buf, 0, TT_LEN);
-      return (TT_LEN);
+      return TT_LEN;
     }
 
   fcs.value = INIT_FCS;