qcacld-3.0: Add sanity check for hdd context

Add sanity check for hdd context and return if
hdd context is null.

Change-Id: Ibef56ee7d0b0505643e04583a78b4924e4bc20bf
CRs-Fixed: 2462701

core/hdd/src/wlan_hdd_main.c

@@ -9267,6 +9267,11 @@ int hdd_psoc_idle_shutdown(struct device *dev)
 {
 	struct hdd_context *hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
 
+	if (!hdd_ctx) {
+		hdd_err_rl("hdd ctx is null");
+		return -EINVAL;
+	}
+
 	if (is_mode_change_psoc_idle_shutdown)
 		return __hdd_mode_change_psoc_idle_shutdown(hdd_ctx);
 	else
@@ -9282,6 +9287,11 @@ int hdd_psoc_idle_restart(struct device *dev)
 {
 	struct hdd_context *hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
 
+	if (!hdd_ctx) {
+		hdd_err_rl("hdd ctx is null");
+		return -EINVAL;
+	}
+
 	return __hdd_psoc_idle_restart(hdd_ctx);
 }