nb/intel/gm45: Call mb_post_raminit_setup() later

The only implementations of `mb_post_raminit_setup()` in the tree are
found in Lenovo ThinkPads. These boards use this function to toggle a
SMBus mux, which makes the DIMM SPDs inaccessible. Given that the SPD
data is needed in `setup_sdram_meminfo()` and that there are no other
side-effects, simply move the call to `mb_post_raminit_setup()` after
the call to `setup_sdram_meminfo()`.

TEST=Verify SMBIOS Type 17 information for lenovo/x200 is correct.

Change-Id: I46abffa48e7e0848f9346ce9c6498860e4ece2da
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81946
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/northbridge/intel/gm45/romstage.c

@@ -74,8 +74,6 @@ void mainboard_romstage_entry(void)
 
 	raminit(&sysinfo, s3resume);
 
-	mb_post_raminit_setup();
-
 	/* Disable D4F0 (unknown signal controller). */
 	pci_and_config32(MCH_DEV, D0F0_DEVEN, ~0x4000);
 
@@ -93,6 +91,8 @@ void mainboard_romstage_entry(void)
 
 	setup_sdram_meminfo(&sysinfo);
 
+	mb_post_raminit_setup();
+
 	romstage_handoff_init(cbmem_initted && s3resume);
 
 	printk(BIOS_SPEW, "exit main()\n");