[PATCH v2] mtd: rawnand: meson: check return value of devm_kasprintf()

[Yi Yang]

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.

Fixes: 1e4d3ba66888 ("mtd: rawnand: meson: fix the clock")
Signed-off-by: Yi Yang <yiyang13 at huawei.com>
---
v2:Change commit log, and fix error check code.
---
 drivers/mtd/nand/raw/meson_nand.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index 378f28ce6a74..ab6a32553dc1 100644
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -1134,6 +1134,11 @@ static int meson_nfc_clk_init(struct meson_nfc *nfc)
 	init.name = devm_kasprintf(nfc->dev,
 				   GFP_KERNEL, "%s#div",
 				   dev_name(nfc->dev));
+	if (!init.name) {
+		dev_err(nfc->dev, "failed to allocate init.name\n");
+		return -ENOMEM;
+	}
+
 	init.ops = &clk_divider_ops;
 	nfc_divider_parent_data[0].fw_name = "device";
 	init.parent_data = nfc_divider_parent_data;
-- 
2.25.1