tree-wide: s/revert_creds()/put_cred(revert_creds_light())/g

tree-wide: s/revert_creds()/put_cred(revert_creds_light())/g

Convert all calls to revert_creds() over to explicitly dropping
reference counts in preparation for converting revert_creds() to
revert_creds_light() semantics.

Link: https://lore.kernel.org/r/20241125-work-cred-v2-3-68b9d38bb5b2@kernel.org
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christian Brauner <brauner@kernel.org>