drivers/net: Remove unnecessary returns from void function()s

This patch removes from drivers/net/ all the unnecessary
return; statements that precede the last closing brace of
void functions.

It does not remove the returns that are immediately
preceded by a label as gcc doesn't like that.

It also does not remove null void functions with return.

Done via:
$ grep -rP --include=*.[ch] -l "return;\n}" net/ | \
  xargs perl -i -e 'local $/ ; while (<>) { s/\n[ \t\n]+return;\n}/\n}/g; print; }'

with some cleanups by hand.

Compile tested x86 allmodconfig only.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wireless/ath/ath5k/phy.c

@@ -2145,8 +2145,6 @@ ath5k_get_chan_pcal_surrounding_piers(struct ath5k_hw *ah,
 done:
 	*pcinfo_l = &pcinfo[idx_l];
 	*pcinfo_r = &pcinfo[idx_r];
-
-	return;
 }
 
 /*

drivers/net/wireless/ath/ath5k/reset.c

@@ -627,7 +627,6 @@ static void ath5k_hw_set_sleep_clock(struct ath5k_hw *ah, bool enable)
 
 		AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 1);
 	}
-	return;
 }
 
 /* TODO: Half/Quarter rate */
@@ -883,8 +882,6 @@ static void ath5k_hw_commit_eeprom_settings(struct ath5k_hw *ah,
 	/* Heavy clipping -disable for now */
 	if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_5_1)
 		ath5k_hw_reg_write(ah, 0, AR5K_PHY_HEAVY_CLIP_ENABLE);
-
-	return;
 }
 
 /*

drivers/net/wireless/ath/ath9k/ar9003_calib.c

@@ -726,7 +726,6 @@ static void ar9003_hw_tx_iq_cal(struct ath_hw *ah)
 
 TX_IQ_CAL_FAILED:
 	ath_print(common, ATH_DBG_CALIBRATE, "Tx IQ Cal failed\n");
-	return;
 }
 
 static bool ar9003_hw_init_cal(struct ath_hw *ah,

drivers/net/wireless/ath/ath9k/calib.c

@@ -86,7 +86,6 @@ static void ath9k_hw_update_nfcal_hist_buffer(struct ath9k_nfcal_hist *h,
 				ath9k_hw_get_nf_hist_mid(h[i].nfCalBuffer);
 		}
 	}
-	return;
 }
 
 static bool ath9k_hw_get_nf_thresh(struct ath_hw *ah,

drivers/net/wireless/ath/ath9k/eeprom.c

@@ -36,8 +36,6 @@ void ath9k_hw_analog_shift_rmw(struct ath_hw *ah, u32 reg, u32 mask,
 
 	if (ah->config.analog_shiftreg)
 		udelay(100);
-
-	return;
 }
 
 int16_t ath9k_hw_interpolate(u16 target, u16 srcLeft, u16 srcRight,

drivers/net/wireless/ath/ath9k/eeprom_def.c

@@ -50,7 +50,6 @@ static void ath9k_get_txgain_index(struct ath_hw *ah,
 		i++;
 
 	*pcdacIdx = i;
-	return;
 }
 
 static void ath9k_olc_get_pdadcs(struct ath_hw *ah,
@@ -751,8 +750,6 @@ static void ath9k_hw_get_def_gain_boundaries_pdadcs(struct ath_hw *ah,
 		pPDADCValues[k] = pPDADCValues[k - 1];
 		k++;
 	}
-
-	return;
 }
 
 static int16_t ath9k_change_gain_boundary_setting(struct ath_hw *ah,

drivers/net/wireless/ath/ath9k/htc_drv_txrx.c

@@ -663,7 +663,6 @@ void ath9k_htc_rxep(void *drv_priv, struct sk_buff *skb,
 	return;
 err:
 	dev_kfree_skb_any(skb);
-	return;
 }
 
 /* FIXME: Locking for cleanup/init */

drivers/net/wireless/ath/regd.c

@@ -333,7 +333,6 @@ static void ath_reg_apply_world_flags(struct wiphy *wiphy,
 		ath_reg_apply_active_scan_flags(wiphy, initiator);
 		break;
 	}
-	return;
 }
 
 int ath_reg_notifier_apply(struct wiphy *wiphy,