bus/fslmc: verify strdup return

[ upstream commit 180d52bc7de2395ce9f4e5a707f4d8bb52be2fe4 ]

Add verify strdup return value logic.

Fixes: e67a616 ("bus/fslmc: support device iteration")

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Acked-by: Sachin Saxena <sachin.saxena@nxp.com>

drivers/bus/fslmc/fslmc_bus.c

@@ -634,6 +634,10 @@ fslmc_bus_dev_iterate(const void *start, const char *str,
 
 	/* Now that name=device_name format is available, split */
 	dup = strdup(str);
+	if (dup == NULL) {
+		DPAA2_BUS_DEBUG("Dup string (%s) failed!\n", str);
+		return NULL;
+	}
 	dev_name = dup + strlen("name=");
 
 	if (start != NULL) {