drm/amd/display: Fix for variable may be used uninitialized error

[Why]
Build failure due to ‘status’ may be used uninitialized

[How]
Initialize status to LINK_TRAINING_SUCCESS
Reviewed-by: NWenjing Liu <Wenjing.Liu@amd.com>
Acked-by: NJasdeep Dhillon <jdhillon@amd.com>
Signed-off-by: NEric Bernstein <eric.bernstein@amd.com>
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

@@ -3199,7 +3199,7 @@ static bool dp_verify_link_cap(
 	bool success = false;
 	bool skip_video_pattern;
 	enum clock_source_id dp_cs_id = get_clock_source_id(link);
-	enum link_training_result status;
+	enum link_training_result status = LINK_TRAINING_SUCCESS;
 	union hpd_irq_data irq_data;
 	struct link_resource link_res;