[PATCH] gpu: drm: swsmu: fix error return code of smu_v11_0_set_allowed_mask()

[Jia-Ju Bai]

When bitmap_empty() or feature->feature_num triggers an error, 
no error return code of smu_v11_0_set_allowed_mask() is assigned.
To fix this bug, ret is assigned with -EINVAL as error return code.

Reported-by: TOTE Robot <oslab at tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990 at gmail.com>
---
 drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
index 90585461a56e..82731a932308 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
@@ -747,8 +747,10 @@ int smu_v11_0_set_allowed_mask(struct smu_context *smu)
 	int ret = 0;
 	uint32_t feature_mask[2];
 
-	if (bitmap_empty(feature->allowed, SMU_FEATURE_MAX) || feature->feature_num < 64)
+	if (bitmap_empty(feature->allowed, SMU_FEATURE_MAX) || feature->feature_num < 64) {
+		ret = -EINVAL;
 		goto failed;
+	}
 
 	bitmap_copy((unsigned long *)feature_mask, feature->allowed, 64);
 
-- 
2.17.1