Have you tried reordering it into something like
if (!self) return nil;
if (!do_stuff_successfully) {
  [self release];
  return nil;
}
...

That's our house style and I've never seen an error like yours.
________________________________________
From: cocoa-dev-bounces+lrucker=vmware....@lists.apple.com 
[cocoa-dev-bounces+lrucker=vmware....@lists.apple.com] on behalf of Bill 
Cheeseman [wjcheese...@gmail.com]
Sent: Saturday, August 29, 2015 8:11 AM
To: Cocoa-Dev Cocoa-Dev Mail
Subject: Impossible leak warning in OS X init method

The following initialization code has generated a leak warning in Xcode 4, 5, 6 
and 7 beta in a framework of mine for several years. It has never caused an 
issue in the wild. I would really like to get rid of the warning. Can anybody 
tell me what I'm doing wrong?

@implementation MyObject // subclass of NSObject

- (id)initWithSomeThing:(id)someThing {
     self = [super init];
     if (self) {
          if (do_stuff_successfully) {
               ...
          } else {
               [self release];
               return nil; // <-- Error (quoted below)
          }
     }
     return self;
}

- (MyObject *)objectWithThing:(id)thisThing {
     if (thisThing) {
          MyObject *object = [[MyObject alloc] initWithSomething:thisThing];
          return [object autorelease];
     }
     return nil;
}

@end

Error: "Object leaked: object allocated and stored into 'self' is not 
referenced later in this execution path and has a retain count of +1"

--

Bill Cheeseman - wjcheese...@comcast.net

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