ASoC: SDCA: Add allocation failure check for Entity name

ASoC: SDCA: Add allocation failure check for Entity name

Currently find_sdca_entity_iot() can allocate a string for the
Entity name but it doesn't check if that allocation succeeded.
Add the missing NULL check after the allocation.

Fixes: 48fa77af2f4a ("ASoC: SDCA: Add terminal type into input/output widget name")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20260303141707.3841635-1-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>