ASoC: qcom: Stop casting away __iomem for error pointers

ASoC: qcom: Stop casting away __iomem for error pointers

We don't need to cast away __iomem when testing with IS_ERR() or
converting with PTR_ERR(). Modern sparse can handle this just fine.
Drop it.

Cc: V Sujith Kumar Reddy <vsujithk@codeaurora.org>
Cc: Srinivasa Rao <srivasam@codeaurora.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Cheng-Yi Chiang <cychiang@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210115034327.617223-4-swboyd@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>