ASoC: amd: Fix a NULL vs IS_ERR() check in probe

The platform_device_register_full() function doesn't return NULL, it
returns error pointers.

Fixes: 7894a7e7ea3d ("ASoC: amd: create ACP3x PCM platform device")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed