staging: isdn: hysdn_procconf_init() remove parantheses from return value

ERROR: return is not a function, parentheses are not required
FILE: git/kernels/staging/drivers/staging/isdn/hysdn/hysdn_procconf.c:385
+       return (0);
Signed-off-by: Giridhar Prasath R <cristianoprasath@gmail.com>
Link: https://lore.kernel.org/r/20190807020331.19729-1-cristianoprasath@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/isdn/hysdn/hysdn_procconf.c

@@ -382,7 +382,7 @@ hysdn_procconf_init(void)
 	}
 
 	printk(KERN_NOTICE "HYSDN: procfs initialised\n");
-	return (0);
+	return 0;
 }				/* hysdn_procconf_init */
 
 /*************************************************************************************/