mtd: rawnand: meson: check return value of devm_kasprintf()

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: 1e4d3ba ("mtd: rawnand: meson: fix the clock")
Signed-off-by: Yi Yang <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>
Link: https://lore.kernel.org/linux-mtd/[email protected]

Author: Yi Yang

drivers/mtd/nand/raw/meson_nand.c

@@ -1134,6 +1134,9 @@ 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)
+		return -ENOMEM;
+
 	init.ops = &clk_divider_ops;
 	nfc_divider_parent_data[0].fw_name = "device";
 	init.parent_data = nfc_divider_parent_data;