wireless, libertas: remove redundant NULL tests before calling release_firmware()

release_firmware() tests for, and deals gracefully with, NULL
pointers. Remove redundant explicit tests before calling the function.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/libertas/if_cs.c

@@ -951,10 +951,8 @@ out2:
 out1:
 	pcmcia_disable_device(p_dev);
 out:
-	if (helper)
-		release_firmware(helper);
-	if (mainfw)
-		release_firmware(mainfw);
+	release_firmware(helper);
+	release_firmware(mainfw);
 
 	lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret);
 	return ret;

drivers/net/wireless/libertas/if_sdio.c

@@ -751,10 +751,8 @@ success:
 	ret = 0;
 
 out:
-	if (helper)
-		release_firmware(helper);
-	if (mainfw)
-		release_firmware(mainfw);
+	release_firmware(helper);
+	release_firmware(mainfw);
 
 	lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
 	return ret;

drivers/net/wireless/libertas/if_spi.c

@@ -1095,10 +1095,8 @@ static int if_spi_init_card(struct if_spi_card *card)
 		goto out;
 
 out:
-	if (helper)
-		release_firmware(helper);
-	if (mainfw)
-		release_firmware(mainfw);
+	release_firmware(helper);
+	release_firmware(mainfw);
 
 	lbs_deb_leave_args(LBS_DEB_SPI, "err %d\n", err);
 

drivers/net/wireless/libertas/main.c

@@ -1269,14 +1269,10 @@ int lbs_get_firmware(struct device *dev, const char *user_helper,
 
   fail:
 	/* Failed */
-	if (*helper) {
-		release_firmware(*helper);
-		*helper = NULL;
-	}
-	if (*mainfw) {
-		release_firmware(*mainfw);
-		*mainfw = NULL;
-	}
+	release_firmware(*helper);
+	*helper = NULL;
+	release_firmware(*mainfw);
+	*mainfw = NULL;
 
 	return -ENOENT;
 }