ALSA: hda: cs35l56: Remove unnecessary NULL check before release_firmware()

release_firmware() checks for NULL pointers internally.
Remove unneeded NULL check for fmw here.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Link: https://patch.msgid.link/20250325084639.801054-1-nichen@iscas.ac.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Author: Chen Ni

sound/pci/hda/cs35l56_hda.c

@@ -546,12 +546,10 @@ static void cs35l56_hda_release_firmware_files(const struct firmware *wmfw_firmw
 					       const struct firmware *coeff_firmware,
 					       char *coeff_filename)
 {
-	if (wmfw_firmware)
-		release_firmware(wmfw_firmware);
+	release_firmware(wmfw_firmware);
 	kfree(wmfw_filename);
 
-	if (coeff_firmware)
-		release_firmware(coeff_firmware);
+	release_firmware(coeff_firmware);
 	kfree(coeff_filename);
 }