misc: eeprom/idt_89hpesx: Use devm_kmemdup to replace devm_kmalloc + memcpy

Use the helper function devm_kmemdup() rather than duplicating its
implementation, which helps to enhance code readability.

Signed-off-by: Li Zetao <[e-mail]>
Reviewed-by: Luca Ceresoli <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/misc/eeprom/idt_89hpesx.c

···
 		return 0;
 	}
 
-	/* Allocate memory for attribute file */
-	pdev->ee_file = devm_kmalloc(dev, sizeof(*pdev->ee_file), GFP_KERNEL);
+	/*
+	 * Allocate memory for attribute file and copy the declared EEPROM attr
+	 * structure to change some of fields
+	 */
+	pdev->ee_file = devm_kmemdup(dev, &bin_attr_eeprom,
+				     sizeof(*pdev->ee_file), GFP_KERNEL);
 	if (!pdev->ee_file)
 		return -ENOMEM;
-
-	/* Copy the declared EEPROM attr structure to change some of fields */
-	memcpy(pdev->ee_file, &bin_attr_eeprom, sizeof(*pdev->ee_file));
 
 	/* In case of read-only EEPROM get rid of write ability */
 	if (pdev->eero) {