pmdomain: ti: Add a null pointer check to the omap_prm_domain_init

devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Link: https://lore.kernel.org/r/20240118054257.200814-1-chentao@kylinos.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Author: KunWuChan

drivers/pmdomain/ti/omap_prm.c

@@ -695,6 +695,8 @@ static int omap_prm_domain_init(struct device *dev, struct omap_prm *prm)
 	data = prm->data;
 	name = devm_kasprintf(dev, GFP_KERNEL, "prm_%s",
 			      data->name);
+	if (!name)
+		return -ENOMEM;
 
 	prmd->dev = dev;
 	prmd->prm = prm;