mtd: rawnand: brcmnand: fix status read of brcmnand_waitfunc

This change fixes an issue where an error return value may be mistakenly
used as NAND status.

Fixes: f504551 ("mtd: rawnand: Propagate error and simplify ternary operators for brcmstb_nand_wait_for_completion()")
Signed-off-by: david regan <[email protected]>
Reviewed-by: William Zhang <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>

Author: david regan

drivers/mtd/nand/raw/brcmnand/brcmnand.c

@@ -2342,6 +2342,11 @@ static int brcmnand_write(struct mtd_info *mtd, struct nand_chip *chip,
 		brcmnand_send_cmd(host, CMD_PROGRAM_PAGE);
 		status = brcmnand_waitfunc(chip);
 
+		if (status < 0) {
+			ret = status;
+			goto out;
+		}
+
 		if (status & NAND_STATUS_FAIL) {
 			dev_info(ctrl->dev, "program failed at %llx\n",
 				(unsigned long long)addr);