[U-Boot] pci: avoid memory leak

[Tom Rini]

On Mon, May 08, 2017 at 08:40:16PM +0200, xypron.glpk at gmx.de wrote:

> strdup uses malloc to allocate memory for str.
> If we cannot bind to the generic driver we should release
> the memory.
> 
> The problem was indicated by clang scan-build.
> 
> Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>

Applied to u-boot/master, thanks!

-- 
Tom
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