ps3rom: fix error return code

Set the return variable to an error code as done elsewhere in the function.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-By: Geoff Levand <geoff@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/scsi/ps3rom.c

@@ -387,6 +387,7 @@ static int ps3rom_probe(struct ps3_system_bus_device *_dev)
 	if (!host) {
 		dev_err(&dev->sbd.core, "%s:%u: scsi_host_alloc failed\n",
 			__func__, __LINE__);
+		error = -ENOMEM;
 		goto fail_teardown;
 	}