thermal/drivers/rz2gl: Add error check for reset_control_deassert()

thermal/drivers/rz2gl: Add error check for reset_control_deassert()

If reset_control_deassert() fails, then we won't be able to access
the device registers. Therefore check the return code of
reset_control_deassert() and bail out in case of error.

While at it replace the parameter "&pdev->dev" -> "dev" in
devm_reset_control_get_exclusive().

Suggested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20211208164010.4130-1-biju.das.jz@bp.renesas.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>