AMD K8 fam10-15: Consolidate post_cache_as_ram call

Change-Id: I5e7890aafbc8c80716ee49690e306482a482a863
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/20573
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>

src/cpu/amd/car/cache_as_ram.inc

@@ -598,6 +598,8 @@ CAR_FAM10_ap_out:
 
 	call	cache_as_ram_main
 
+	call	post_cache_as_ram
+
 	/* We will not go back. */
 
 	post_code(0xaf)		/* Should never see this POST code. */