drm/amd: cleanup coding style a bit

Fix patch check warning:
WARNING: suspect code indent for conditional statements (8, 17)
+       if (obj && obj->use < 0) {
+                DRM_ERROR("RAS ERROR: Unbalance obj(%s) use\n", obj->head.name);

WARNING: braces {} are not necessary for single statement blocks
+       if (obj && obj->use < 0) {
+                DRM_ERROR("RAS ERROR: Unbalance obj(%s) use\n", obj->head.name);
+       }
Signed-off-by: Bernard Zhao <bernard@vivo.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -447,11 +447,10 @@ static ssize_t amdgpu_ras_sysfs_read(struct device *dev,
 
 static inline void put_obj(struct ras_manager *obj)
 {
-	if (obj && --obj->use == 0)
+	if (obj && (--obj->use == 0))
 		list_del(&obj->node);
-	if (obj && obj->use < 0) {
-		 DRM_ERROR("RAS ERROR: Unbalance obj(%s) use\n", obj->head.name);
-	}
+	if (obj && (obj->use < 0))
+		DRM_ERROR("RAS ERROR: Unbalance obj(%s) use\n", obj->head.name);
 }
 
 /* make one obj and return it. */