ALSA: emux: Adjust one function call together with a variable assignment

The script "checkpatch.pl" pointed information out like the following.

ERROR: do not use assignment in if condition

Thus fix the affected source code place.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/sound/synth/emux/emux_seq.c b/sound/synth/emux/emux_seq.c
index 55579f6b8cb2..53820f75ba3e 100644
--- a/sound/synth/emux/emux_seq.c
+++ b/sound/synth/emux/emux_seq.c
@@ -144,7 +144,8 @@ snd_emux_create_port(struct snd_emux *emu, char *name,
         int i, type, cap;
 
         /* Allocate structures for this channel */
-        if ((p = kzalloc(sizeof(*p), GFP_KERNEL)) == NULL) {
+        p = kzalloc(sizeof(*p), GFP_KERNEL);
+        if (!p) {
                 snd_printk(KERN_ERR "no memory\n");
                 return NULL;
         }