ALSA: emu10k1: Fix assignment in if condition

PCI EMU10k1 driver code contains a few assignments in if condition,
which is a bad coding style that may confuse readers and occasionally
lead to bugs.

This patch is merely for coding-style fixes, no functional changes.

Link: https://lore.kernel.org/r/20210608140540.17885-41-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/emu10k1/emufx.c b/sound/pci/emu10k1/emufx.c
index 80ef62a..6cf7c8b 100644
--- a/sound/pci/emu10k1/emufx.c
+++ b/sound/pci/emu10k1/emufx.c
@@ -436,7 +436,8 @@ int snd_emu10k1_fx8010_unregister_irq_handler(struct snd_emu10k1 *emu,
 	unsigned long flags;
 	
 	spin_lock_irqsave(&emu->fx8010.irq_lock, flags);
-	if ((tmp = emu->fx8010.irq_handlers) == irq) {
+	tmp = emu->fx8010.irq_handlers;
+	if (tmp == irq) {
 		emu->fx8010.irq_handlers = tmp->next;
 		if (emu->fx8010.irq_handlers == NULL) {
 			snd_emu10k1_intr_disable(emu, INTE_FXDSPENABLE);
@@ -871,7 +872,9 @@ static int snd_emu10k1_add_controls(struct snd_emu10k1 *emu,
 			}
 			knew.private_value = (unsigned long)ctl;
 			*ctl = *nctl;
-			if ((err = snd_ctl_add(emu->card, kctl = snd_ctl_new1(&knew, emu))) < 0) {
+			kctl = snd_ctl_new1(&knew, emu);
+			err = snd_ctl_add(emu->card, kctl);
+			if (err < 0) {
 				kfree(ctl);
 				kfree(knew.tlv.p);
 				goto __error;
@@ -2403,7 +2406,8 @@ static int _snd_emu10k1_init_efx(struct snd_emu10k1 *emu)
 	while (ptr < 0x200)
 		OP(icode, &ptr, iACC3, C_00000000, C_00000000, C_00000000, C_00000000);
 
-	if ((err = snd_emu10k1_fx8010_tram_setup(emu, ipcm->buffer_size)) < 0)
+	err = snd_emu10k1_fx8010_tram_setup(emu, ipcm->buffer_size);
+	if (err < 0)
 		goto __err;
 	icode->gpr_add_control_count = i;
 	icode->gpr_add_controls = controls;
@@ -2681,7 +2685,8 @@ int snd_emu10k1_fx8010_new(struct snd_emu10k1 *emu, int device)
 	struct snd_hwdep *hw;
 	int err;
 	
-	if ((err = snd_hwdep_new(emu->card, "FX8010", device, &hw)) < 0)
+	err = snd_hwdep_new(emu->card, "FX8010", device, &hw);
+	if (err < 0)
 		return err;
 	strcpy(hw->name, "EMU10K1 (FX8010)");
 	hw->iface = SNDRV_HWDEP_IFACE_EMU10K1;