[U-Boot] mmc: fix return value check condition

[Jaehoon Chung]

Hi,

On 03/05/2018 05:20 PM, Peng Fan wrote:
> sd_read_ssr returns 0, means no error.
> Fixes: 5b2e72f32721484("mmc: read ssr only if MMC write support is enabled")

Sorry for late. Applied to u-boot-mmc. Thanks!

Best Regards,
Jaehoon Chung

> 
> Signed-off-by: Peng Fan <peng.fan at nxp.com>
> Cc: Jaehoon Chung <jh80.chung at samsung.com>
> Cc: Jean-Jacques Hiblot <jjhiblot at ti.com>
> ---
>  drivers/mmc/mmc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
> index c930893300..92ea78b8af 100644
> --- a/drivers/mmc/mmc.c
> +++ b/drivers/mmc/mmc.c
> @@ -1689,7 +1689,7 @@ static int sd_select_mode_and_width(struct mmc *mmc, uint card_caps)
>  
>  #if CONFIG_IS_ENABLED(MMC_WRITE)
>  				err = sd_read_ssr(mmc);
> -				if (!err)
> +				if (err)
>  					pr_warn("unable to read ssr\n");
>  #endif
>  				if (!err)
>