[PATCH] drm/amd/display: remove redundant null pointer check before kfree

[zhong jiang]

kfree has taken null pointer into account. hence it is safe to remove
the unnecessary check.

Signed-off-by: zhong jiang <zhongjiang at huawei.com>
---
 drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
index cf6ef38..6f730b5 100644
--- a/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
+++ b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
@@ -174,9 +174,7 @@ static bool hdmi_14_process_transaction(
 			link->ctx,
 			link,
 			&i2c_command);
-
-	if (buff)
-		kfree(buff);
+	kfree(buff);
 
 	return result;
 }
-- 
1.7.12.4