ASoC: samsung: s2c24xx-i2s: remove redundant error message

There is no need to report the resource request error in
the driver as it is already handled within devm_ioremap_resource().
While at it also drop a redundant variable initialization.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>