ipmi_si: use bool type for initialized variable

Cover 'int' to 'bool' type for initialized variable.
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Message-Id: <20190517101245.4341-2-wangkefeng.wang@huawei.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

drivers/char/ipmi/ipmi_si_intf.c

@@ -71,7 +71,7 @@ enum si_intf_state {
 
 static const char * const si_to_str[] = { "invalid", "kcs", "smic", "bt" };
 
-static int initialized;
+static bool initialized;
 
 /*
  * Indexes into stats[] in smi_info below.
@@ -2124,7 +2124,7 @@ static int __init init_ipmi_si(void)
 	}
 
 skip_fallback_noirq:
-	initialized = 1;
+	initialized = true;
 	mutex_unlock(&smi_infos_lock);
 
 	if (type)