mtd: rawnand: qcom: Rename variables in qcom_op_cmd_mapping()

qcom_op_cmd_mapping() function accepts opcode and returns the corresponding
command register. So let's rename the local variables and parameters to
reflect the same.

Reported-by: Miquel Raynal <miquel.raynal@bootlin.com>
Closes: https://lore.kernel.org/all/20230804190750.3367a044@xps-13/
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230805174146.57006-3-manivannan.sadhasivam@linaro.org

Author: Mani-Sadhasivam

drivers/mtd/nand/raw/qcom_nandc.c

@@ -2555,39 +2555,39 @@ static int qcom_nand_attach_chip(struct nand_chip *chip)
 	return 0;
 }
 
-static int qcom_op_cmd_mapping(struct qcom_nand_controller *nandc, u8 cmd,
+static int qcom_op_cmd_mapping(struct qcom_nand_controller *nandc, u8 opcode,
 			       struct qcom_op *q_op)
 {
-	int ret;
+	int cmd;
 
-	switch (cmd) {
+	switch (opcode) {
 	case NAND_CMD_RESET:
-		ret = OP_RESET_DEVICE;
+		cmd = OP_RESET_DEVICE;
 		break;
 	case NAND_CMD_READID:
-		ret = OP_FETCH_ID;
+		cmd = OP_FETCH_ID;
 		break;
 	case NAND_CMD_PARAM:
 		if (nandc->props->qpic_v2)
-			ret = OP_PAGE_READ_ONFI_READ;
+			cmd = OP_PAGE_READ_ONFI_READ;
 		else
-			ret = OP_PAGE_READ;
+			cmd = OP_PAGE_READ;
 		break;
 	case NAND_CMD_ERASE1:
 	case NAND_CMD_ERASE2:
-		ret = OP_BLOCK_ERASE;
+		cmd = OP_BLOCK_ERASE;
 		break;
 	case NAND_CMD_STATUS:
-		ret = OP_CHECK_STATUS;
+		cmd = OP_CHECK_STATUS;
 		break;
 	case NAND_CMD_PAGEPROG:
-		ret = OP_PROGRAM_PAGE;
+		cmd = OP_PROGRAM_PAGE;
 		q_op->flag = OP_PROGRAM_PAGE;
 		nandc->exec_opwrite = true;
 		break;
 	}
 
-	return ret;
+	return cmd;
 }
 
 /* NAND framework ->exec_op() hooks and related helpers */