[SCSI] scsi: lpfc error path fix

	Add kmalloc failure check and fix the loop on error path. Without the
patch pool element at index [0] will not be freed.

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Acked-by: James Smart <James.Smart@Emulex.Com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c
index 066292d3995a..ec3bbbde6f7a 100644
--- a/drivers/scsi/lpfc/lpfc_mem.c
+++ b/drivers/scsi/lpfc/lpfc_mem.c
@@ -56,6 +56,9 @@ lpfc_mem_alloc(struct lpfc_hba * phba)
 
         pool->elements = kmalloc(sizeof(struct lpfc_dmabuf) *
                                          LPFC_MBUF_POOL_SIZE, GFP_KERNEL);
+        if (!pool->elements)
+                goto fail_free_lpfc_mbuf_pool;
+
         pool->max_count = 0;
         pool->current_count = 0;
         for ( i = 0; i < LPFC_MBUF_POOL_SIZE; i++) {
@@ -82,10 +85,11 @@ lpfc_mem_alloc(struct lpfc_hba * phba)
  fail_free_mbox_pool:
         mempool_destroy(phba->mbox_mem_pool);
  fail_free_mbuf_pool:
-        while (--i)
+        while (i--)
                 pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,
                                                  pool->elements[i].phys);
         kfree(pool->elements);
+ fail_free_lpfc_mbuf_pool:
         pci_pool_destroy(phba->lpfc_mbuf_pool);
  fail_free_dma_buf_pool:
         pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool);