clk: Remove prepare_lock hold assertion in __clk_release()

Removing this assertion lets us move the kref_put() call outside the
prepare_lock section. We don't need to hold the prepare_lock here to
free memory and destroy the clk_core structure. We've already unlinked
the clk from the clk tree and by the time the release function runs
nothing holds a reference to the clk_core anymore so anything with the
pointer can't access the memory that's being freed anyway. Way back in
commit 496eadf ("clk: Use lockdep asserts to find missing hold of
prepare_lock") we didn't need to have this assertion either.

Fixes: 496eadf ("clk: Use lockdep asserts to find missing hold of prepare_lock")
Cc: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Douglas Anderson <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: bebarino

drivers/clk/clk.c

@@ -4375,8 +4375,6 @@ static void __clk_release(struct kref *ref)
 {
 	struct clk_core *core = container_of(ref, struct clk_core, ref);
 
-	lockdep_assert_held(&prepare_lock);
-
 	clk_core_free_parent_map(core);
 	kfree_const(core->name);
 	kfree(core);