[PATCH] mvsas: fix error return code in mvs_task_prep()

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From: Wei Yongjun <weiyongjun1@xxxxxxxxxx>

Fix to return error code -ENOMEM from the error handling
case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
---
 drivers/scsi/mvsas/mv_sas.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index 86eb199..c7cc803 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -791,8 +791,10 @@ static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf
 	slot->slot_tag = tag;
 
 	slot->buf = pci_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
-	if (!slot->buf)
+	if (!slot->buf) {
+		rc = -ENOMEM;
 		goto err_out_tag;
+	}
 	memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
 
 	tei.task = task;

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