mips: fix write_table

This replicates commit 3f7ad7b216 and
commit 823edda98e for mips.

Change-Id: Id97e1fefa20cfa3bcb2cf0336b5a4ff7d9fe813b
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: http://review.coreboot.org/9166
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>

src/arch/mips/tables.c

@@ -30,11 +30,7 @@
 
 #define MAX_COREBOOT_TABLE_SIZE (8 * 1024)
 
-void cbmem_arch_init(void)
-{
-}
-
-struct lb_memory *write_tables(void)
+void write_tables(void)
 {
 	unsigned long table_pointer, new_table_pointer;
 
@@ -44,7 +40,7 @@ struct lb_memory *write_tables(void)
 						 MAX_COREBOOT_TABLE_SIZE);
 	if (!table_pointer) {
 		printk(BIOS_ERR, "Could not add CBMEM for coreboot table.\n");
-		return NULL;
+		return;
 	}
 
 	new_table_pointer = write_coreboot_table(0UL, 0UL, table_pointer,
@@ -62,6 +58,4 @@ struct lb_memory *write_tables(void)
 
 	/* Print CBMEM sections */
 	cbmem_list();
-
-	return get_lb_mem();
 }