Fix cfg maintenance after inlining in AutoFDO

Fix cfg maintenance after inlining in AutoFDO

Todo from early_inliner needs to be propagated so that
cleanup_tree_cfg () is called if necessary.

This bug was causing an assert in get_loop_body during
ipa-sra in autoprofiledbootstrap build since loops weren't
fixed up and one of the loops had num_nodes set to 0.

Tested on x86_64-pc-linux-gnu.

gcc/ChangeLog:

	* auto-profile.cc (auto_profile): Check todo from early_inline
	to see if cleanup_tree_vfg needs to be called.
	(early_inline): Return todo from early_inliner.