[PATCH 4.17 09/45] staging: android: ion: Switch to pr_warn_once in ion_buffer_destroy

4.17-stable review patch. If anyone has any objections, please let me know. -- From: Laura Abbott commit 45ad559a29629cb1c64ee636563c69b71524f077 upstream. Syzbot reported yet another warning with Ion: WARNING: CPU: 0 PID: 1467 at drivers/staging/android/ion/ion.c:122

[PATCH 4.17 09/45] staging: android: ion: Switch to pr_warn_once in ion_buffer_destroy

4.17-stable review patch. If anyone has any objections, please let me know. -- From: Laura Abbott commit 45ad559a29629cb1c64ee636563c69b71524f077 upstream. Syzbot reported yet another warning with Ion: WARNING: CPU: 0 PID: 1467 at drivers/staging/android/ion/ion.c:122