ftrace: Move ftrace_init() to right after memory initialization

Initialize the ftrace records immediately after memory initialization, as
that is all that is required for the records to be created. This will allow
for future work to get function tracing started earlier in the boot process.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
diff --git a/init/main.c b/init/main.c
index 81a49e8..c0137b9 100644
--- a/init/main.c
+++ b/init/main.c
@@ -545,6 +545,8 @@
 	trap_init();
 	mm_init();
 
+	ftrace_init();
+
 	/* trace_printk can be enabled here */
 	early_trace_init();
 
@@ -673,8 +675,6 @@
 		efi_free_boot_services();
 	}
 
-	ftrace_init();
-
 	/* Do the rest non-__init'ed, we're now alive */
 	rest_init();
 }