xen/arm: earlyprintk: move early_flush in early_puts

early_puts function will be exported to be used in the console code. To
avoid loosing characters (see why in commit cafdceb "xen/arm: avoid lost
characters with early_printk), early_flush needs to be called in this
function.

Signed-off-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

xen/arch/arm/early_printk.c

@@ -29,12 +29,6 @@ static void __init early_puts(const char *s)
         early_putch(*s);
         s++;
     }
-}
-
-static void __init early_vprintk(const char *fmt, va_list args)
-{
-    vsnprintf(buf, sizeof(buf), fmt, args);
-    early_puts(buf);
 
     /*
      * Wait the UART has finished to transfer all characters before
@@ -43,6 +37,12 @@ static void __init early_vprintk(const char *fmt, va_list args)
     early_flush();
 }
 
+static void __init early_vprintk(const char *fmt, va_list args)
+{
+    vsnprintf(buf, sizeof(buf), fmt, args);
+    early_puts(buf);
+}
+
 void __init early_printk(const char *fmt, ...)
 {
     va_list args;