drm/amdgpu: drop redundant semicolon

A minor typo.
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c

@@ -1023,7 +1023,7 @@ static int amdgpu_discovery_set_mes_ip_blocks(struct amdgpu_device *adev)
 		amdgpu_device_ip_block_add(adev, &mes_v10_1_ip_block);
 		break;
 	default:
-		break;;
+		break;
 	}
 	return 0;
 }