brcmfmac: remove error message upon allocation failure

In function brcmf_add_if() an error message is printed
upon alloc_netdev() failure. The allocation failure itself
spews enough info in the log so remove the error message.
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Piotr Haber <phaber@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c

@@ -760,10 +760,8 @@ struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
 		brcmf_dbg(INFO, "allocate netdev interface\n");
 		/* Allocate netdev, including space for private structure */
 		ndev = alloc_netdev(sizeof(*ifp), name, ether_setup);
-		if (!ndev) {
-			brcmf_err("OOM - alloc_netdev\n");
+		if (!ndev)
 			return ERR_PTR(-ENOMEM);
-		}
 
 		ifp = netdev_priv(ndev);
 		ifp->ndev = ndev;