Fix chip-tool remove-keyset command. (#27676)

We were returning without calling SetCommandExitStatus if removing group keys
_succeeded_, which is backwards.

Fixes #27600

Author: bzbarsky-apple

examples/chip-tool/commands/group/Commands.h

@@ -332,10 +332,7 @@ class RemoveKeySet : public CHIPCommand
         }
         iter->Release();
 
-        if (err == CHIP_NO_ERROR)
-        {
-            return err;
-        }
+        ReturnErrorOnFailure(err);
         ReturnErrorOnFailure(groupDataProvider->RemoveKeySet(fabricIndex, keysetId));
 
         SetCommandExitStatus(CHIP_NO_ERROR);