ASoC: rockchip: rockchip_i2s: Handle runtime PM resume failures in set_fmt

rockchip_i2s_set_fmt() calls pm_runtime_get_sync() before accessing
hardware registers, but ignores its return value.
If the runtime resume fails, the function continues to perform register
accesses while the device state is undefined.
Replace pm_runtime_get_sync() with pm_runtime_resume_and_get() and
return early on failure to avoid unpowered register accesses.

Fixes: 53ca9b9777b9 ("ASoC: rockchip: i2s: Fix regmap_ops hang")
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260903112739.373621-2-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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