[PATCH] mmc: sdhci-sprd: Add error handling for sdhci_runtime_suspend_host()

[Wentao Liang <vulab@iscas.ac.cn>]

The dhci_sprd_runtime_suspend() calls sdhci_runtime_suspend_host() but
does not handle the return value. A proper implementation can be found
in sdhci_am654_runtime_suspend().

Add error handling for sdhci_runtime_suspend_host(). Return the error
code if the suspend fails.

Fixes: fb8bd90f83c4 ("mmc: sdhci-sprd: Add Spreadtrum's initial host controller")
Cc: stable@vger.kernel.org # v4.20
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
---
 drivers/mmc/host/sdhci-sprd.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
index db5e253b0f79..dd41427e973a 100644
--- a/drivers/mmc/host/sdhci-sprd.c
+++ b/drivers/mmc/host/sdhci-sprd.c
@@ -922,9 +922,12 @@ static int sdhci_sprd_runtime_suspend(struct device *dev)
 {
 	struct sdhci_host *host = dev_get_drvdata(dev);
 	struct sdhci_sprd_host *sprd_host = TO_SPRD_HOST(host);
+	int ret;
 
 	mmc_hsq_suspend(host->mmc);
-	sdhci_runtime_suspend_host(host);
+	ret = sdhci_runtime_suspend_host(host);
+	if (ret)
+		return ret;
 
 	clk_disable_unprepare(sprd_host->clk_sdio);
 	clk_disable_unprepare(sprd_host->clk_enable);
-- 
2.42.0.windows.2