spi/fsl: deal with a compile warning

ret is unused when CONFIG_FSL_SOC defined,
so return ret instead of -ENOMEM when the
kzalloc fails to avoid it.

Signed-off-by: Zhao Qiang <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

drivers/spi/spi-fsl-lib.c

···
 
 	pinfo = devm_kzalloc(&ofdev->dev, sizeof(*pinfo), GFP_KERNEL);
 	if (!pinfo)
-		return -ENOMEM;
+		return ret;
 
 	pdata = &pinfo->pdata;
 	dev->platform_data = pdata;