perf: Simplify group_sched_in()

Collate the error paths. Code duplication only leads to divergence and
extra bugs.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20201029162901.972161394@infradead.org
This commit is contained in:
Peter Zijlstra 2020-10-29 16:29:15 +01:00
commit 251ff2d493