[PATCH] mtd: powernv: Add check devm_kasprintf() returned value

[Charles Han]

devm_kasprintf() can return a NULL pointer on failure but this
returned value is not checked.

Fixes: acfe63ec1c59 ("mtd: Convert to using %pOFn instead of device_node.name")
Signed-off-by: Charles Han <hanchunc...@inspur.com>
---
 drivers/mtd/devices/powernv_flash.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/devices/powernv_flash.c 
b/drivers/mtd/devices/powernv_flash.c
index 66044f4f5bad..10cd1d9b4885 100644
--- a/drivers/mtd/devices/powernv_flash.c
+++ b/drivers/mtd/devices/powernv_flash.c
@@ -207,6 +207,9 @@ static int powernv_flash_set_driver_info(struct device *dev,
         * get them
         */
        mtd->name = devm_kasprintf(dev, GFP_KERNEL, "%pOFP", dev->of_node);
+       if (!mtd->name)
+               return -ENOMEM;
+
        mtd->type = MTD_NORFLASH;
        mtd->flags = MTD_WRITEABLE;
        mtd->size = size;
-- 
2.31.1