mtd: rawnand: legacy: Drop useless test in nand_legacy_set_defaults()

nand_legacy_set_defaults() returns directly if chip->exec_op != NULL,
no need to test !chip->exec_op after that.
Signed-off-by: NBoris Brezillon <boris.brezillon@bootlin.com>
Tested-by: NJanusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

drivers/mtd/nand/raw/nand_legacy.c

@@ -585,7 +585,7 @@ void nand_legacy_set_defaults(struct nand_chip *chip)
 		chip->legacy.chip_delay = 20;
 
 	/* check, if a user supplied command function given */
-	if (!chip->legacy.cmdfunc && !chip->exec_op)
+	if (!chip->legacy.cmdfunc)
 		chip->legacy.cmdfunc = nand_command;
 
 	/* check, if a user supplied wait function given */