smbios: fix checkstyle warning

Fixes the following checkstyle warning:

WARNING: Missing a blank line after declarations
+               int tmp = smbios_write_funcs[i]((ulong *)&addr, handle++);
+               max_struct_size = max(max_struct_size, tmp);

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

lib/smbios.c

@@ -278,6 +278,7 @@ ulong write_smbios_table(ulong addr)
 	/* populate minimum required tables */
 	for (i = 0; i < ARRAY_SIZE(smbios_write_funcs); i++) {
 		int tmp = smbios_write_funcs[i]((ulong *)&addr, handle++);
+
 		max_struct_size = max(max_struct_size, tmp);
 		len += tmp;
 	}