[PATCH 4.10 16/81] xfs: correct null checks and error processing in xfs_initialize_perag

4.10-stable review patch. If anyone has any objections, please let me know. -- From: Bill O'Donnell commit b20fe4730ea5c037c16631fb0df659c7b6d4b3b1 upstream. If pag cannot be allocated, the current error exit path will trip a null pointer deference error

[PATCH 4.10 16/81] xfs: correct null checks and error processing in xfs_initialize_perag

4.10-stable review patch. If anyone has any objections, please let me know. -- From: Bill O'Donnell commit b20fe4730ea5c037c16631fb0df659c7b6d4b3b1 upstream. If pag cannot be allocated, the current error exit path will trip a null pointer deference error when calling