mtd: spi-nor: core: Use auto-detection only once

JIRA: https://issues.redhat.com/browse/RHEL-40636

commit bffabd1
Author: Tudor Ambarus <tudor.ambarus@microchip.com>
Date:   Wed Apr 20 13:34:19 2022 +0300

    mtd: spi-nor: core: Use auto-detection only once

    In case spi_nor_match_name() returned NULL, the auto detection was
    issued twice. There's no reason to try to detect the same chip twice,
    do the auto detection only once.

    Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
    Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
    Reviewed-by: Michael Walle <michael@walle.cc>
    Link: https://lore.kernel.org/r/20220420103427.47867-4-tudor.ambarus@microchip.com

Signed-off-by: Joel Slebodnick <jslebodn@redhat.com>

Author: Joel Slebodnick

drivers/mtd/spi-nor/core.c

@@ -3038,9 +3038,7 @@ static const struct flash_info *spi_nor_get_flash_info(struct spi_nor *nor,
 		info = spi_nor_match_name(nor, name);
 	/* Try to auto-detect if chip name wasn't specified or not found */
 	if (!info)
-		info = spi_nor_read_id(nor);
-	if (IS_ERR_OR_NULL(info))
-		return ERR_PTR(-ENOENT);
+		return spi_nor_read_id(nor);
 
 	/*
 	 * If caller has specified name of flash model that can normally be