Clean up the first driver if the second driver can't be registered.

Fixes: 4ee9fe3e ("clk: qcom: lpass-sc7180: Disentangle the two clock devices")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20201113101419.GC168908@mwandaReviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>