radeon/audio: consolidate audio_get_pin() functions

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Slava Grigorev <slava.grigorev@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/evergreen_hdmi.c b/drivers/gpu/drm/radeon/evergreen_hdmi.c
index aa8a31b..26d8cd5 100644
--- a/drivers/gpu/drm/radeon/evergreen_hdmi.c
+++ b/drivers/gpu/drm/radeon/evergreen_hdmi.c
@@ -301,11 +301,10 @@
 	}
 
 	/* disable audio prior to setting up hw */
+	dig->afmt->pin = radeon_audio_get_pin(encoder);
 	if (ASIC_IS_DCE6(rdev)) {
-		dig->afmt->pin = dce6_audio_get_pin(rdev);
 		dce6_audio_enable(rdev, dig->afmt->pin, 0);
 	} else {
-		dig->afmt->pin = r600_audio_get_pin(rdev);
 		dce4_audio_enable(rdev, dig->afmt->pin, 0);
 	}