control_shm: remove duplicate code (coverity)

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/src/control/control_shm.c b/src/control/control_shm.c
index d7b4139..1d9de8b 100644 (file)
--- a/src/control/control_shm.c
+++ b/src/control/control_shm.c
@@ -302,13 +302,9 @@ static int snd_ctl_shm_pcm_prefer_subdevice(snd_ctl_t *ctl, int subdev)
 {
        snd_ctl_shm_t *shm = ctl->private_data;
        volatile snd_ctl_shm_ctrl_t *ctrl = shm->ctrl;
-       int err;
        ctrl->u.pcm_prefer_subdevice = subdev;
        ctrl->cmd = SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE;
-       err = snd_ctl_shm_action(ctl);
-       if (err < 0)
-               return err;
-       return err;
+       return snd_ctl_shm_action(ctl);
 }
 
 static int snd_ctl_shm_rawmidi_next_device(snd_ctl_t *ctl, int * device)
@@ -343,26 +339,18 @@ static int snd_ctl_shm_rawmidi_prefer_subdevice(snd_ctl_t *ctl, int subdev)
 {
        snd_ctl_shm_t *shm = ctl->private_data;
        volatile snd_ctl_shm_ctrl_t *ctrl = shm->ctrl;
-       int err;
        ctrl->u.rawmidi_prefer_subdevice = subdev;
        ctrl->cmd = SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE;
-       err = snd_ctl_shm_action(ctl);
-       if (err < 0)
-               return err;
-       return err;
+       return snd_ctl_shm_action(ctl);
 }
 
 static int snd_ctl_shm_set_power_state(snd_ctl_t *ctl, unsigned int state)
 {
        snd_ctl_shm_t *shm = ctl->private_data;
        volatile snd_ctl_shm_ctrl_t *ctrl = shm->ctrl;
-       int err;
        ctrl->u.power_state = state;
        ctrl->cmd = SNDRV_CTL_IOCTL_POWER;
-       err = snd_ctl_shm_action(ctl);
-       if (err < 0)
-               return err;
-       return err;
+       return snd_ctl_shm_action(ctl);
 }
 
 static int snd_ctl_shm_get_power_state(snd_ctl_t *ctl, unsigned int *state)