m68k: Return -ENODEV if no device is found

According to the tests in do_initcalls(), the proper error code in case no
device is found is -ENODEV, not -ENXIO or -EIO.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index c9751b2..7516baf 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1714,10 +1714,10 @@
 	int i, ret;
 
 	if (!MACH_IS_AMIGA)
-		return -ENXIO;
+		return -ENODEV;
 
 	if (!AMIGAHW_PRESENT(AMI_FLOPPY))
-		return -ENXIO;
+		return -ENODEV;
 
 	if (register_blkdev(FLOPPY_MAJOR,"fd"))
 		return -EBUSY;
@@ -1755,7 +1755,7 @@
 	if (!floppy_queue)
 		goto out_queue;
 
-	ret = -ENXIO;
+	ret = -ENODEV;
 	if (fd_probe_drives() < 1) /* No usable drives */
 		goto out_probe;