fpga: fpga-bridge: remove unnecessary null check in of_fpga_bridge_get

fpga: fpga-bridge: remove unnecessary null check in of_fpga_bridge_get

Notice that bridge = to_fpga_bridge(dev); expands to:

bridge = container_of(dev, struct fpga_bridge, dev);

and container_of is never null, so this null check is
unnecessary.

Addresses-Coverity-ID: 1397912
Reported-by: Alan Tull <[email protected]>
Signed-off-by: Gustavo A. R. Silva <[email protected]>
Reviewed-by: Moritz Fischer <[email protected]>
Signed-off-by: Alan Tull <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>