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>

drivers/net/bsd_comp.c

@@ -429,7 +429,7 @@ static void *bsd_alloc (unsigned char *options, int opt_len, int decomp)
 	if (!db->lens)
 	  {
 	    bsd_free (db);
-	    return (NULL);
+	    return NULL;
 	  }
       }
 /*