ASoC: smd845: fix memory leak

In case memory resources for *card* were allocated, release them before
return.

Addresses-Coverity-ID: 1472244 ("Resource leak")
Fixes: 6b1687bf ("ASoC: qcom: add sdm845 sound card support")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>