When allocating a fence fails, free sync_fence only if one has been created. Change-Id: I2ecefd25c4e000f415b28c7c2b01b91654d6ef43 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1249958 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: Seema Khowala <seemaj@nvidia.com> Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com> Reviewed-by: Konsta Holtta <kholtta@nvidia.com>