thermal/drivers/qcom/tsens: Init debugfs only with successful probe

thermal/drivers/qcom/tsens: Init debugfs only with successful probe

Calibrate and tsens_register can fail or PROBE_DEFER. This will cause a
double or a wrong init of the debugfs information. Init debugfs only
with successful probe fixing warning about directory already present.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Acked-by: Thara Gopinath <thara.gopinath@linaro.org>
Link: https://lore.kernel.org/r/20221022125657.22530-2-ansuelsmth@gmail.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>