Fixes gcc '-Wunused-but-set-variable' warning:

drivers/ide/ide-cd_ioctl.c: In function 'ide_cdrom_select_speed':
drivers/ide/ide-cd_ioctl.c:212:6: warning:
  variable ‘stat’ set but not used [-Wunused-but-set-variable]

It never used since introduction.

Signed-off-by: Baokun Li <redacted>
---
  drivers/ide/ide-cd_ioctl.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c
index 011eab9c69b7..8d0a52123349 100644
--- a/drivers/ide/ide-cd_ioctl.c
+++ b/drivers/ide/ide-cd_ioctl.c

@@ -231,6 +231,8 @@ int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed)
  	}
  
  	stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, NULL, 0, 0);
+	if (stat)
+		return stat;
  
  	if (!ide_cdrom_get_capabilities(drive, buf)) {
  		ide_cdrom_update_speed(drive, buf);