msm: ipa3: adding check for holb stats

Adding null checks while getting the holb stats

Change-Id: Iba83cd86522679137f66fa1e7844884955fecf4d
Signed-off-by: Veerendra Kumar Kamsali <quic_veekum@quicinc.com>

drivers/platform/msm/ipa/ipa_v3/ipa_stats.c

@@ -229,6 +229,7 @@ static int ipa_get_generic_stats(unsigned long arg)
 		return res;
 	}
 
+	if(ipa_lnx_agent_ctx.alloc_info.num_holb_drop_stats_clients != 0 ) {
 		/* HOLB Discard stats */
 		holb_disc_stats_ptr = &generic_stats->holb_stats.holb_disc_stats[0];
 		for (i = 0; i < IPA_CLIENT_MAX; i++) {
@@ -250,7 +251,9 @@ static int ipa_get_generic_stats(unsigned long arg)
 			holb_disc_stats_ptr = (struct holb_discard_stats *)((
 				uint64_t)holb_disc_stats_ptr + sizeof(struct holb_discard_stats));
 		}
+	}
 
+	if(ipa_lnx_agent_ctx.alloc_info.num_holb_mon_stats_clients != 0 ) {
 		/* HOLB Monitor stats */
 		holb_mon_stats_ptr = (struct holb_monitor_stats *)(
 			(uint64_t)&generic_stats->holb_stats.holb_disc_stats[0] +
@@ -271,6 +274,7 @@ static int ipa_get_generic_stats(unsigned long arg)
 			holb_mon_stats_ptr = (struct holb_monitor_stats *)((
 				uint64_t)holb_mon_stats_ptr + sizeof(struct holb_monitor_stats));
 		}
+	}
 
 	if(copy_to_user((void __user *)arg,
 		(u8 *)generic_stats,