drm/amdgpu: refine vcn firmware loading

refine vcn firmware loading
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -94,18 +94,14 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work);
 int amdgpu_vcn_early_init(struct amdgpu_device *adev)
 {
 	char ucode_prefix[25];
-	char fw_name[40];
 	int r, i;
 
+	amdgpu_ucode_ip_version_decode(adev, UVD_HWIP, ucode_prefix, sizeof(ucode_prefix));
 	for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
-		amdgpu_ucode_ip_version_decode(adev, UVD_HWIP, ucode_prefix, sizeof(ucode_prefix));
-		snprintf(fw_name, sizeof(fw_name), "amdgpu/%s.bin", ucode_prefix);
-		if (amdgpu_ip_version(adev, UVD_HWIP, 0) ==  IP_VERSION(4, 0, 6) &&
-			i == 1) {
-			snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_%d.bin", ucode_prefix, i);
-		}
-
-		r = amdgpu_ucode_request(adev, &adev->vcn.fw[i], fw_name);
+		if (i == 1 && amdgpu_ip_version(adev, UVD_HWIP, 0) ==  IP_VERSION(4, 0, 6))
+			r = amdgpu_ucode_request(adev, &adev->vcn.fw[i], "amdgpu/%s_%d.bin", ucode_prefix, i);
+		else
+			r = amdgpu_ucode_request(adev, &adev->vcn.fw[i], "amdgpu/%s.bin", ucode_prefix);
 		if (r) {
 			amdgpu_ucode_release(&adev->vcn.fw[i]);
 			return r;