We were not checking the return from devm_add_action() which can fail.
Start using the helper and devm_add_action_or_reset() and return
directly as we know that the cleanup has been done by this helper.
Signed-off-by: NSudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>