service/acc: Early return in failure case in LoadImage()

Allows unindenting the other branch's code.

src/core/hle/service/acc/acc.cpp

@@ -104,13 +104,14 @@ private:
         rb.Push(RESULT_SUCCESS);
 
         const FileUtil::IOFile image(GetImagePath(user_id), "rb");
-
         if (!image.IsOpen()) {
             LOG_WARNING(Service_ACC,
                         "Failed to load user provided image! Falling back to built-in backup...");
             ctx.WriteBuffer(backup_jpeg);
             rb.Push<u32>(backup_jpeg_size);
-        } else {
+            return;
+        }
+
         const auto size = std::min<u32>(image.GetSize(), MAX_JPEG_IMAGE_SIZE);
         std::vector<u8> buffer(size);
         image.ReadBytes(buffer.data(), buffer.size());
@@ -118,7 +119,6 @@ private:
         ctx.WriteBuffer(buffer.data(), buffer.size());
         rb.Push<u32>(buffer.size());
     }
-    }
 
     void GetImageSize(Kernel::HLERequestContext& ctx) {
         LOG_DEBUG(Service_ACC, "called");