IB/IPoIB: Remove 'else' when the 'if' has a return.

This patch fixes a checkpatch issue related to not having
to use an 'else' if the 'if' path returns from the function.
Reviewed-by: NIra Weiny <ira.weiny@intel.com>
Reviewed-by: NDon Hiatt <don.hiatt@intel.com>
Reviewed-by: NSean Hefty <sean.hefty@intel.com>
Signed-off-by: NDasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

drivers/infiniband/ulp/ipoib/ipoib_multicast.c

@@ -295,7 +295,7 @@ static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast,
 				-PTR_ERR(ah));
 			/* use original error */
 			return PTR_ERR(ah);
-		} else {
+		}
 		spin_lock_irq(&priv->lock);
 		mcast->ah = ah;
 		spin_unlock_irq(&priv->lock);
@@ -306,7 +306,6 @@ static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast,
 				be16_to_cpu(mcast->mcmember.mlid),
 				mcast->mcmember.sl);
 	}
-	}
 
 	/* actually send any queued packets */
 	netif_tx_lock_bh(dev);