[PATCH] mmc: sdhci-of-arasan: Add missed checks for devm_clk_register()

[Chuhong Yuan]

These functions do not check the return value of devm_clk_register():
  - sdhci_arasan_register_sdcardclk()
  - sdhci_arasan_register_sampleclk()

Therefore, add the missed checks to fix them.

Fixes: c390f2110adf1 ("mmc: sdhci-of-arasan: Add ability to export card clock")
Signed-off-by: Chuhong Yuan <hslester96@xxxxxxxxx>
---
 drivers/mmc/host/sdhci-of-arasan.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index db9b544465cd..fb26e743e1fd 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -1299,6 +1299,8 @@ sdhci_arasan_register_sdcardclk(struct sdhci_arasan_data *sdhci_arasan,
 	clk_data->sdcardclk_hw.init = &sdcardclk_init;
 	clk_data->sdcardclk =
 		devm_clk_register(dev, &clk_data->sdcardclk_hw);
+	if (IS_ERR(clk_data->sdcardclk))
+		return PTR_ERR(clk_data->sdcardclk);
 	clk_data->sdcardclk_hw.init = NULL;
 
 	ret = of_clk_add_provider(np, of_clk_src_simple_get,
@@ -1349,6 +1351,8 @@ sdhci_arasan_register_sampleclk(struct sdhci_arasan_data *sdhci_arasan,
 	clk_data->sampleclk_hw.init = &sampleclk_init;
 	clk_data->sampleclk =
 		devm_clk_register(dev, &clk_data->sampleclk_hw);
+	if (IS_ERR(clk_data->sampleclk))
+		return PTR_ERR(clk_data->sampleclk);
 	clk_data->sampleclk_hw.init = NULL;
 
 	ret = of_clk_add_provider(np, of_clk_src_simple_get,
-- 
2.26.2