mmc: tegra: use devm help functions to get the clk and gpio

Simplify the error and remove path.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
1 file changed