[PATCH] drm/i915/display: use IS_ERR_OR_NULL macro on DP tunnel mgr creation failure

[Krzysztof Karas]

drm_dp_tunnel_mgr_create() may return NULL on failure, which will not
be caught via IS_ERR(), so replace it with IS_ERR_OR_NULL() macro.

Signed-off-by: Krzysztof Karas <krzysztof.karas at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp_tunnel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp_tunnel.c b/drivers/gpu/drm/i915/display/intel_dp_tunnel.c
index 94198bc04939..6c960416f776 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_tunnel.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_tunnel.c
@@ -793,7 +793,7 @@ int intel_dp_tunnel_mgr_init(struct intel_display *display)
 	drm_connector_list_iter_end(&connector_list_iter);
 
 	tunnel_mgr = drm_dp_tunnel_mgr_create(display->drm, dp_connectors);
-	if (IS_ERR(tunnel_mgr))
+	if (IS_ERR_OR_NULL(tunnel_mgr))
 		return PTR_ERR(tunnel_mgr);
 
 	display->dp_tunnel_mgr = tunnel_mgr;
-- 
2.34.1