drivers/amdgpu: Remove spurious semicolons

Found-by: Coccinelle
Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/iceland_smc.c b/drivers/gpu/drm/amd/amdgpu/iceland_smc.c
index 5285712..2118399 100644
--- a/drivers/gpu/drm/amd/amdgpu/iceland_smc.c
+++ b/drivers/gpu/drm/amd/amdgpu/iceland_smc.c
@@ -211,7 +211,7 @@
 						   PPSMC_Msg msg)
 {
 	if (!iceland_is_smc_ram_running(adev))
-		return -EINVAL;;
+		return -EINVAL;
 
 	if (wait_smu_response(adev)) {
 		DRM_ERROR("Failed to send previous message\n");