Add a missing return in the SharingDeviceRegistration delete path

Bug: 1028344
Change-Id: Iba393d02c795f32b9b1341cdf9ef12037fd9126c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1937069
Auto-Submit: Peter Beverloo <peter@chromium.org>
Reviewed-by: Richard Knoll <knollr@chromium.org>
Reviewed-by: Michael van Ouwerkerk <mvanouwerkerk@chromium.org>
Commit-Queue: Peter Beverloo <peter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#719221}

chrome/browser/sharing/sharing_device_registration.cc

@@ -174,8 +174,10 @@ void SharingDeviceRegistration::UnregisterDevice(
 void SharingDeviceRegistration::OnVapidFCMTokenDeleted(
     RegistrationCallback callback,
     SharingDeviceRegistrationResult result) {
-  if (result != SharingDeviceRegistrationResult::kSuccess)
+  if (result != SharingDeviceRegistrationResult::kSuccess) {
     std::move(callback).Run(result);
+    return;
+  }
 
   DeleteFCMToken(kSharingSenderID, std::move(callback));
 }