rgw: remove useless lines in RGWDeleteBucket::execute

Signed-off-by: Bingyin Zhang <zhangbingyin@cloudin.cn>

src/rgw/rgw_op.cc

@@ -2841,19 +2841,19 @@ void RGWDeleteBucket::pre_exec()
 
 void RGWDeleteBucket::execute()
 {
-  op_ret = -EINVAL;
-
-  if (s->bucket_name.empty())
+  if (s->bucket_name.empty()) {
+    op_ret = -EINVAL;
     return;
+  }
 
   if (!s->bucket_exists) {
     ldout(s->cct, 0) << "ERROR: bucket " << s->bucket_name << " not found" << dendl;
     op_ret = -ERR_NO_SUCH_BUCKET;
     return;
   }
+
   RGWObjVersionTracker ot;
   ot.read_version = s->bucket_info.ep_objv;
-
   if (s->system_request) {
     string tag = s->info.args.get(RGW_SYS_PARAM_PREFIX "tag");
     string ver_str = s->info.args.get(RGW_SYS_PARAM_PREFIX "ver");
@@ -2872,7 +2872,7 @@ void RGWDeleteBucket::execute()
   }
 
   op_ret = rgw_bucket_sync_user_stats(store, s->user->user_id, s->bucket_info);
-  if ( op_ret < 0) {
+  if (op_ret < 0) {
      ldout(s->cct, 1) << "WARNING: failed to sync user stats before bucket delete: op_ret= " << op_ret << dendl;
   }
 
@@ -2896,7 +2896,6 @@ void RGWDeleteBucket::execute()
   }
 
   string prefix, delimiter;
-
   if (s->prot_flags & RGW_REST_SWIFT) {
     string path_args;
     path_args = s->info.args.get("path");
@@ -2911,13 +2910,11 @@ void RGWDeleteBucket::execute()
   }
 
   op_ret = abort_bucket_multiparts(store, s->cct, s->bucket_info, prefix, delimiter);
-
   if (op_ret < 0) {
     return;
   }
 
   op_ret = store->delete_bucket(s->bucket_info, ot, false);
-
   if (op_ret == -ECANCELED) {
     // lost a race, either with mdlog sync or another delete bucket operation.
     // in either case, we've already called rgw_unlink_bucket()
@@ -2933,12 +2930,6 @@ void RGWDeleteBucket::execute()
 		       << dendl;
     }
   }
-
-  if (op_ret < 0) {
-    return;
-  }
-
-
 }
 
 int RGWPutObj::verify_permission()