[PATCH] [SCSI] pm8001: Add error handler in pm8001_init_sas_add() if kzalloc fails.

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From: Santosh Nayak <santoshprasadnayak@xxxxxxxxx>

We need to add error handler if kzalloc fails to allocate and initialize.
Otherwise it may lead to Null derefernce error in 

Signed-off-by: Santosh Nayak <santoshprasadnayak@xxxxxxxxx>
 drivers/scsi/pm8001/pm8001_init.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
index 36efaa7..fdce28e 100644
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -519,6 +519,10 @@ static void pm8001_init_sas_add(struct pm8001_hba_info *pm8001_ha)
 	payload.minor_function = 0;
 	payload.length = 128;
 	payload.func_specific = kzalloc(128, GFP_KERNEL);
+	if (unlikely(!payload.func_specific)) {
+		printk(KERN_ERR "%s: failed to alloc memory\n", __func__);
+		return;
+	}
 	PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload);
 	for (i = 0; i < pm8001_ha->chip->n_phy; i++) {

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