mmc: via-sdmmc: remove unneeded variable 'ret'

Fix the following coccicheck warning:
./drivers/mmc/host/via-sdmmc.c:1274:5-8: Unneeded variable: "ret".
Return "0" on line 1295
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/1615272478-52458-1-git-send-email-yang.lee@linux.alibaba.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/via-sdmmc.c

@@ -1271,7 +1271,6 @@ static int __maybe_unused via_sd_suspend(struct device *dev)
 static int __maybe_unused via_sd_resume(struct device *dev)
 {
 	struct via_crdr_mmc_host *sdhost;
-	int ret = 0;
 	u8 gatt;
 
 	sdhost = dev_get_drvdata(dev);
@@ -1292,7 +1291,7 @@ static int __maybe_unused via_sd_resume(struct device *dev)
 	via_restore_pcictrlreg(sdhost);
 	via_init_sdc_pm(sdhost);
 
-	return ret;
+	return 0;
 }
 
 static SIMPLE_DEV_PM_OPS(via_sd_pm_ops, via_sd_suspend, via_sd_resume);