memory: atmel-ebi: Fix the test to enable generic SMC logic

We should test the apply value and not the ret one here.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Fixes: 6a4ec4cd ("memory: add Atmel EBI (External Bus Interface) driver")
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

drivers/memory/atmel-ebi.c

@@ -503,7 +503,7 @@ static int at91_ebi_dev_setup(struct at91_ebi *ebi, struct device_node *np,
 		 * Attach the EBI device to the generic SMC logic if at least
 		 * one "atmel,smc-" property is present.
 		 */
-		if (ebi->ebi_csa && ret)
+		if (ebi->ebi_csa && apply)
 			regmap_field_update_bits(ebi->ebi_csa,
 						 BIT(cs), 0);
 	}