fix(plat/rcar): change process that copy code to system ram

Change processing of invalidate instruction cache to after changing
the RAM attribute.

Signed-off-by: Koichi Yamaguchi <koichi.yamaguchi.zb@hitachi.com>
Signed-off-by: Toshiyuki Ogasahara <toshiyuki.ogasahara.bo@hitachi.com>
Signed-off-by: Yoshifumi Hosoya <yoshifumi.hosoya.wj@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> # squash with rcar_gen3: drivers: Disable data cache while Suspend To RAM
Change-Id: I61339fc5415b26074b1e0753da4c4a432e8f83d9

drivers/renesas/common/pwrc/pwrc.c

@@ -776,14 +776,14 @@ void rcar_pwrc_code_copy_to_system_ram(void)
 	memcpy((void *)sram.base, code.base, code.len);
 	flush_dcache_range((uint64_t) sram.base, code.len);
 
+	attr = MT_MEMORY | MT_RO | MT_SECURE | MT_EXECUTE;
+	ret = xlat_change_mem_attributes(sram.base, sram.len, attr);
+	assert(ret == 0);
+
 	/* Invalidate instruction cache */
 	plat_invalidate_icache();
 	dsb();
 	isb();
-
-	attr = MT_MEMORY | MT_RO | MT_SECURE | MT_EXECUTE;
-	ret = xlat_change_mem_attributes(sram.base, sram.len, attr);
-	assert(ret == 0);
 }
 
 uint32_t rcar_pwrc_get_cluster(void)