spi: zynqmp_gqspi: Fix not calling dev_err with a device

Use `bus` instead of `dev`.
Signed-off-by: NSean Anderson <seanga2@gmail.com>
Reviewed-by: NMichal Simek <michal.simek@xilinx.com>
Tested-by: NPatrick Delaunay <patrick.delaunay@st.com>

drivers/spi/zynqmp_gqspi.c

@@ -346,20 +346,20 @@ static int zynqmp_qspi_probe(struct udevice *bus)
 
 	ret = clk_get_by_index(bus, 0, &clk);
 	if (ret < 0) {
-		dev_err(dev, "failed to get clock\n");
+		dev_err(bus, "failed to get clock\n");
 		return ret;
 	}
 
 	clock = clk_get_rate(&clk);
 	if (IS_ERR_VALUE(clock)) {
-		dev_err(dev, "failed to get rate\n");
+		dev_err(bus, "failed to get rate\n");
 		return clock;
 	}
 	debug("%s: CLK %ld\n", __func__, clock);
 
 	ret = clk_enable(&clk);
 	if (ret && ret != -ENOSYS) {
-		dev_err(dev, "failed to enable clock\n");
+		dev_err(bus, "failed to enable clock\n");
 		return ret;
 	}
 	plat->frequency = clock;